Ja też nie wstydzę się mówić po polsku, nawet jeśli czasem mylę akcent.

Yes. Wstydzę already tells you the subject is I, so ja is not grammatically necessary.

Polish often drops subject pronouns when they are clear from the verb. Here, ja adds a bit of emphasis or contrast, something like:

• I also am not ashamed to speak Polish.
• As for me, I’m not ashamed either.

So:

• Wstydzę się mówić po polsku = perfectly fine
• Ja wstydzę się mówić po polsku = more emphatic

In this sentence, ja też suggests I too / me too.

Też means also, too, or as well.

In Ja też nie wstydzę się mówić po polsku, it means:

• I also am not ashamed to speak Polish
• I’m not ashamed either

Its position is flexible, but placement changes what feels emphasized. Here, ja też naturally means I too.

Compare:

• Ja też nie wstydzę się mówić po polsku = I too am not ashamed...
• Ja nie wstydzę się też mówić po polsku = possible, but less natural here

So the given order is normal and idiomatic.

It comes from the verb wstydzić się, which means to be ashamed or to feel embarrassed.

So:

• wstydzę się = I am ashamed / I feel embarrassed
• nie wstydzę się = I am not ashamed / I’m not embarrassed

With an infinitive, it means to be ashamed to do something:

• wstydzę się mówić = I’m ashamed to speak
• nie wstydzę się mówić = I’m not ashamed to speak

So in this sentence, it means something like:

• I’m not ashamed to speak Polish
• I don’t feel embarrassed speaking Polish

Yes. Wstydzić się is a reflexive verb, so it normally appears with się.

You should learn it as a whole unit:

• wstydzić się = to be ashamed
• bać się = to be afraid
• uczyć się = to learn / study

In many cases, się does not translate directly into English. It is just part of how the Polish verb works.

So you should not treat wstydzę and się as optional separate pieces here. Wstydzę się is the correct form.

Sometimes yes, because Polish word order is fairly flexible. But some positions sound more natural than others.

The standard version here is:

• Ja też nie wstydzę się mówić po polsku

You may also hear:

• Ja też się nie wstydzę mówić po polsku

Both are possible. The difference is mostly about rhythm and emphasis, not basic meaning.

For learners, the safest choice is to keep się close to the verb:

• nie wstydzę się

That will sound natural.

Because in Polish, to say to speak a language, you usually say:

• mówić po polsku = speak Polish
• mówić po angielsku = speak English
• mówić po niemiecku = speak German

This is the normal pattern for languages in everyday speech.

Mówić polski is not the standard way to say speak Polish.

A learner may also see:

• mówić po polsku
• rozmawiać po polsku = converse in Polish
• znać polski = know Polish

These are different expressions.

Po polsku is the standard Polish way to say in Polish or in the Polish language.

It behaves like an adverbial expression, and it is part of a common pattern:

• po polsku = in Polish
• po angielsku = in English
• po francusku = in French
• po hiszpańsku = in Spanish

So:

• Mówię po polsku = I speak Polish
• To jest napisane po polsku = This is written in Polish

The important thing for learners is to memorize the pattern po + language adverb form.

Because mówić is imperfective and refers to speaking in a general or ongoing sense.

Here the meaning is:

• I’m not ashamed to speak Polish
• not I’m not ashamed to say one specific thing in Polish

Compare:

• mówić = to speak, to be speaking, to speak in general
• powiedzieć = to say, to tell, to say something once/completely

So:

• nie wstydzę się mówić po polsku = natural for general ability or habit
• nie wstydzę się powiedzieć tego po polsku = I’m not ashamed to say that in Polish

Nawet jeśli means even if.

It introduces a clause that adds contrast:

• nawet jeśli czasem mylę akcent = even if I sometimes get the stress/accent wrong

Other similar expressions are:

• nawet jeżeli = also even if
• chociaż = although / even though

In this sentence, nawet jeśli fits very well because it means:
This is true despite that possibility or fact.

Czasem means sometimes.

In this sentence:

• nawet jeśli czasem mylę akcent = even if I sometimes get the stress wrong

Polish allows some movement of adverbs like czasem, for example:

• nawet jeśli czasem mylę akcent
• nawet jeśli mylę czasem akcent

The first version is more natural and neutral.

So for learners, czasem before the verb is a very good default choice.

It comes from:

• mylić = to confuse, to mix up, to get wrong

So mylę akcent means something like:

• I get the stress wrong
• I place the stress incorrectly
• I mix up the accent/stress

In Polish, akcent often refers to word stress, not only foreign accent in the English sense.

So in this sentence, it most likely means:

• I sometimes stress words incorrectly in Polish

That is probably the intended meaning.

Because mylić usually takes a direct object in the accusative case.

For masculine inanimate nouns like akcent, the accusative singular looks the same as the nominative singular:

• nominative: akcent
• accusative: akcent

So:

• mylę akcent = I get the stress wrong

This is why the form does not visibly change.

Probably not in the English sense of having a foreign accent.

In Polish, akcent often means stress, especially the stress pattern in words. So this sentence is most naturally understood as:

• even if I sometimes stress words incorrectly

If you wanted to talk about having a foreign accent, Polish might use akcent too, but the context would usually make that clear, for example:

• Mam obcy akcent = I have a foreign accent

Here, because of mylę akcent, the idea is more likely I misplace the stress.

Polish word order is flexible, but not completely random. The original sentence is natural and clear:

• Ja też nie wstydzę się mówić po polsku, nawet jeśli czasem mylę akcent.

Possible variations include:

• Też nie wstydzę się mówić po polsku, nawet jeśli czasem mylę akcent.
• Ja nie wstydzę się też mówić po polsku...
• Nawet jeśli czasem mylę akcent, ja też nie wstydzę się mówić po polsku.

These versions may sound more marked or emphasize different parts.

For a learner, the original order is a very good model:

• subject/emphasis: Ja też
• negated verb: nie wstydzę się
• infinitive phrase: mówić po polsku
• contrasting clause: nawet jeśli czasem mylę akcent

A few spots may be difficult for English speakers:

• wstydzę się
• mówić
• po polsku
• mylę
• akcent

A few tips:

• wstydzę: the cluster wst- is tricky; say it slowly at first
• dzę in wstydzę has a nasal vowel at the end: ę
• mówić: ó sounds like u
• polsku: the -sku ending should be clear, not swallowed
• mylę: final ę is again nasal, though in normal speech it may be lighter depending on context
• akcent: stress in Polish is usually on the second-to-last syllable, so AK-cent? Actually in Polish it is ak-CENT? Let's count: a-kcent is one syllable cluster plus second part; in practice the stress falls on the penultimate syllable, which here is the second syllable: ak-CENT

Also remember that Polish stress is usually predictable, which is why mylę akcent makes sense as I get the stress wrong.

It breaks down like this:

• Ja też = I too / me too
• nie wstydzę się = am not ashamed
• mówić po polsku = to speak Polish
• nawet jeśli = even if
• czasem = sometimes
• mylę akcent = I get the stress wrong

So the full structure is:

I too am not ashamed to speak Polish, even if I sometimes get the stress wrong.

This is a useful model sentence because it combines:

• emphasis with ja też
• negation with nie
• a reflexive verb with się
• an infinitive after a verb
• the common language pattern po polsku
• a contrast clause with nawet jeśli