Bu karmaşa komik bir hatıraya dönüştü.

A natural breakdown is:

• Bu = this
• karmaşa = chaos, confusion, mess
• komik = funny, amusing
• bir = a / an
• hatıra-ya = to/into a memory
• dönüş-tü = turned / transformed / became

So the sentence is literally something like:

• This chaos turned into a funny memory.

Because the verb dönüşmek usually takes the thing you become in the dative case, often translated as to or into in English.

So:

• hatıra = memory
• hatıraya = to/into a memory

The ending here is -(y)A, the dative suffix.

Because hatıra ends in a vowel, Turkish inserts a buffer y before the suffix:

• hatıra + a → hatıraya

This is very common in Turkish.

Dönüştü is the simple past tense, third person singular, of dönüşmek.

• dönüşmek = to turn into, to transform, to become
• dönüştü = turned into / transformed into / became

In this sentence, it means that the chaos later came to be seen as a funny memory.

The Turkish past tense suffix is often shown as -DI, but its actual form changes.

There are two things happening here:

• Vowel harmony chooses ü
• Consonant assimilation changes d to t after a voiceless consonant

The verb stem is:

• dönüş-

Since the stem ends in ş, which is voiceless, the past suffix becomes -tı/-ti/-tu/-tü, not -dı/-di/-du/-dü.

Because of vowel harmony, the correct form is:

• dönüş + tü → dönüştü

Bir often works like English a/an.

So:

• komik bir hatıra = a funny memory

It can also add a slight sense of some kind of or one depending on context, but here it is basically the normal indefinite marker.

Without bir, the phrase would still be possible, but it would sound more general or stylistically different:

• komik hatıra

In this sentence, komik bir hatıra is the most natural choice.

Because Turkish adjectives do not agree with nouns in gender, number, or case.

So komik stays komik no matter what noun follows it:

• komik hatıra = funny memory
• komik hatıralar = funny memories
• komik hatıraya = to a funny memory

The case ending goes on the noun, not the adjective.

Yes.

• Bu karmaşa = this chaos / this mess

That is the thing undergoing the change.

The structure is:

• Bu karmaşa = subject
• komik bir hatıraya = what it turned into
• dönüştü = verb

So the sentence means that this mess/chaos became a funny memory.

Yes, it is very normal.

Turkish usually puts the verb at the end, and that is what happens here:

• Bu karmaşa
• komik bir hatıraya
• dönüştü

This is a standard Turkish sentence pattern.

You can sometimes change the order for emphasis, but the neutral version is the one you see here.

In form, -ya is the dative case, which often means to.

But with some verbs, especially verbs of change like dönüşmek, English often translates that dative idea as into.

So:

• hatıraya dönüştü = turned into a memory

A useful way to think about it is:

• Turkish uses a case ending
• English often uses a preposition

Yes, you could, and it would sound natural.

• oldu = became
• dönüştü = turned into / transformed into

The difference is mainly nuance:

• oldu is more general and common for became
• dönüştü emphasizes a clearer transformation from one state into another

So:

• Bu karmaşa komik bir hatıra oldu = natural, slightly simpler
• Bu karmaşa komik bir hatıraya dönüştü = a bit more expressive about transformation

In this sentence, yes, memory is the right meaning.

But hatıra can have a slightly broader range depending on context. It can refer to:

• a memory
• a recollection
• something remembered
• in some contexts, even a souvenir or keepsake

Here, though, komik bir hatıra clearly means a funny memory.

A related word is anı, which also means memory. In many situations they are close, but hatıra can sound a little more emotional, literary, or nostalgic depending on context.