לא כל כלל בדקדוק מובן לי מיד, אבל אחרי תרגול הוא בדרך כלל נעשה פשוט יותר.

Because לא כל + singular noun is a common Hebrew pattern meaning not every ... or not all ....

So:

• לא כל כלל בדקדוק... = Not every grammar rule...

It does not mean that there are no rules you understand immediately. It only says that this is not true for every single rule.

If you wanted no rule, you would say something like:

• שום כלל בדקדוק לא... = No grammar rule...

Hebrew often uses כל + singular noun to mean every.

So:

• כלל = rule
• כל כלל = every rule

This is very similar to English:

• every rule, not every rules

So לא כל כלל בדקדוק literally works like not every rule in grammar.

Because the sentence is talking about grammar rules in general, not a specific set already identified as the rules.

• כלל = a rule / rule
• בדקדוק = in grammar

Also, after כל in the sense of every, the noun is normally not marked with the:

• כל ספר = every book
• not usually כל הספר for this meaning

So כלל בדקדוק means a grammar rule / any grammar rule in grammar.

בדקדוק is made of:

• ב־ = in
• דקדוק = grammar

So it means in grammar or in the area of grammar.

A useful thing to notice: in Hebrew, short prepositions are often attached directly to the next word:

• בבית = in a house / in the house
• בדקדוק = in grammar / in the grammar

In this sentence, the natural meaning is simply in grammar.

In present-tense Hebrew, the verb to be is usually omitted.

So where English says:

• Not every grammar rule is immediately clear to me

Hebrew simply says:

• לא כל כלל בדקדוק מובן לי מיד

This is completely normal. Hebrew often uses:

• הוא עייף = He is tired
• הספר מעניין = The book is interesting
• זה ברור = It is clear

No separate present-tense is/am/are is needed.

מובן comes from the verb להבין (to understand), but here it functions more like understood / understandable / clear.

So מובן לי literally means something like:

• understood by me
• or more naturally, clear to me

In this sentence, the most natural English sense is:

• is clear to me
• is understandable to me

Because כלל (rule) is masculine singular, מובן is also masculine singular.

Compare:

• הכלל מובן לי = The rule is clear to me
• המילה מובנת לי = The word is clear to me
  Here מובנת is feminine, matching מילה.

Both are possible in Hebrew, but they focus on the idea a little differently.

• אני מבין את הכלל = I understand the rule
• הכלל מובן לי = The rule is clear to me / understandable to me

The sentence you have uses the second pattern, which is very natural when talking about whether something feels clear or not.

So the focus is on the rule’s clarity, not directly on your action of understanding.

לי means to me.

It is built from:

• ל־ = to
• ־י = me

So:

• מובן לי = clear to me
• נראה לי = it seems to me
• חשוב לי = it is important to me

This ל־ pattern is very common in Hebrew with feelings, judgments, and mental reactions.

מיד means immediately, right away, or at once.

So:

• מובן לי מיד = clear to me immediately / right away

Its position here is natural: it comes after the main idea מובן לי and adds the timing.

Hebrew word order is somewhat flexible, but this order sounds very normal.

הוא means he/it, and here it means it.

It refers back to כלל (rule), which is masculine singular.

So:

• אחרי תרגול הוא... = After practice, it...

Why include it? Because in the present tense, נעשה does not by itself clearly show the subject the way an English verb sometimes does. Hebrew often states the pronoun or noun explicitly:

• הוא נעשה פשוט יותר = It becomes simpler
• הכלל נעשה פשוט יותר = The rule becomes simpler

Both are possible; the pronoun avoids repeating כלל.

אחרי תרגול means after practice.

It is made of:

• אחרי = after
• תרגול = practice / अभ्यास-like drill practice / practice work

In context, it can sound very natural in English as:

• after practice
• with practice

There is no the here because it means practice in a general sense, not one specific practice session.

בדרך כלל is a fixed expression meaning:

• generally
• usually
• as a rule

Literally, it comes from:

• בדרך = in the way / by the way of
• כלל = rule

So the literal sense is something like as a rule, which is close to English.

This is a very common phrase, and learners should treat it as a set expression.

So in your sentence:

• הוא בדרך כלל נעשה פשוט יותר = it usually becomes simpler

The first כלל means rule as a noun.
The second כלל is part of the idiom בדרך כלל.

Here נעשה means becomes.

So:

• הוא נעשה פשוט יותר = it becomes simpler

This is a very common meaning of נעשה in Modern Hebrew.

Be careful: נעשה can also mean is done / was done / was made, depending on context. Hebrew often relies on context to tell you which meaning is intended.

In this sentence, because we are talking about how a rule changes in difficulty after practice, becomes is clearly the right meaning.

It is present tense in form, but the whole clause has a habitual meaning because of בדרך כלל.

So:

• נעשה = becomes / is becoming
• בדרך כלל נעשה = usually becomes

Hebrew present tense often covers:

• simple present
• ongoing present
• habitual present

Context tells you which one is meant.

Yes, both פשוט יותר and יותר פשוט can be natural, depending on style and rhythm.

In this sentence:

• נעשה פשוט יותר = becomes simpler

This sounds very normal.

The important part for a learner is that יותר marks comparison:

• פשוט = simple
• פשוט יותר = simpler / more simple

So the sentence is saying that after practice, the rule becomes easier to grasp.

Grammatically, the subject is the rule (or it, referring to the rule), so the sentence literally says:

• after practice, it usually becomes simpler

In natural English, that really means:

• it usually becomes easier to understand
• it usually feels simpler after practice

So Hebrew expresses the idea by saying the rule becomes simpler, even though the real-life meaning is about your understanding improving.

Not with the same meaning.

• אני לא מבין כל כלל בדקדוק מיד would sound more like I do not understand every grammar rule immediately, which is possible, but it focuses on you.
• לא כל כלל בדקדוק מובן לי מיד focuses on the rules not being immediately clear.

The original version sounds a bit more natural and polished in explanatory or reflective language. It is a nice example of how Hebrew often prefers X is clear to me / not clear to me over a more direct I understand / don’t understand X.