Saya tidak takut lagi.

A simple breakdown is:

• Saya = I
• tidak = not
• takut = afraid / scared
• lagi = here, anymore / any longer

So the sentence structure is basically:

• Saya
  • tidak
    • takut
      • lagi
• I
  • not
    • afraid
      • anymore

In Malay, tidak is used to negate:

• verbs
• adjectives
• states/qualities

Since takut means afraid/scared, it behaves like a state or adjective here, so tidak is correct:

• Saya tidak takut lagi.

Bukan is usually used to negate:

• nouns
• identities
• classifications
• equations

For example:

• Dia bukan guru. = He/She is not a teacher.

So Saya bukan takut lagi would be wrong in standard Malay.

Yes, lagi often means again or more, but in negative sentences it commonly means anymore / any longer.

So:

• Saya takut lagi would not mean I am afraid anymore. That does not work.
• Saya tidak takut lagi = I am not afraid anymore

This is a very common pattern:

• tidak ... lagi = no longer / not ... anymore

Examples:

• Saya tidak marah lagi. = I’m not angry anymore.
• Dia tidak tinggal di sini lagi. = He/She doesn’t live here anymore.

For English speakers, it is easiest to think of takut here as an adjective or state meaning afraid/scared.

Malay does not always divide words in exactly the same way English does, but in this sentence:

• takut describes your state
• so Saya tidak takut lagi is like I am not afraid anymore

Notice there is no separate word for am. Malay often leaves out the verb to be in sentences like this.

Because Malay usually does not need a verb like am / is / are in this kind of sentence.

English:

• I am afraid

Malay:

• Saya takut

So:

• Saya tidak takut lagi literally looks like I not afraid anymore
• but it naturally means I am not afraid anymore

This is completely normal in Malay.

Yes. That is a very common, natural informal version.

Compare:

• Saya tidak takut lagi. = neutral / standard / more formal
• Aku tak takut lagi. = informal / casual / personal

Changes:

• saya → aku
• tidak → tak

You would use aku with friends, close people, or in very casual speech.
You would usually keep saya in polite, careful, or more formal situations.

Sometimes, yes, especially in conversation when the subject is already clear.

For example:

• Tak takut lagi. = Not afraid anymore.

This sounds casual and conversational.
But if you are learning standard sentence structure, keeping Saya is safest:

• Saya tidak takut lagi.

The most natural order is:

• Saya tidak takut lagi

That is the standard way to say I’m not afraid anymore.

Putting lagi before tidak takut would sound unnatural here.

You may also hear or see:

• Saya tidak lagi takut.

This is possible and means roughly the same thing, but Saya tidak takut lagi is usually the more straightforward and common pattern for learners to remember.

A simple approximate pronunciation is:

• sah-yah tee-dahʔ tah-koot lah-gee

A few notes:

• Saya sounds like sah-yah
• tidak is often pronounced tee-dak, but in casual speech the final k may be softened or unreleased
• takut sounds like tah-koot
• lagi sounds like lah-gee

In everyday speech, many speakers would say:

• Saya tak takut lagi or
• Aku tak takut lagi

Usually, if you want to say not anymore, lagi is enough:

• Saya tidak takut lagi.

You do not need sudah.

If you say:

• Saya sudah tidak takut.

that can also mean I am no longer afraid or I am already not afraid, but it has a slightly different feel and may sound more marked or deliberate.

For most learners, the simplest natural pattern is:

• tidak ... lagi = not ... anymore

You can add what you are afraid of after takut.

Examples:

• Saya tidak takut lagi kepadanya. = I’m not afraid of him/her anymore.
• Saya tidak takut lagi akan hal itu. = I’m not afraid of that anymore.

In everyday Malay, people may also use simpler or more conversational phrasing depending on context. But for a learner, the key point is:

• takut can be followed by the thing or person that causes fear
• the core sentence still stays the same:
  • Saya tidak takut lagi ...

They are related, but not identical.

• takut = afraid / scared
• bimbang = worried / anxious
• risau = worried / uneasy

So:

• Saya tidak takut lagi = I’m not afraid anymore
• Saya tidak risau lagi = I’m not worried anymore
• Saya tidak bimbang lagi = I’m no longer anxious/worried

If the feeling is fear, takut is the best choice.

Yes, very natural.

• Saya tidak takut lagi is a correct, standard sentence.
• In casual speech, many people would more often say:
  • Saya tak takut lagi
  • Aku tak takut lagi

So the sentence is both grammatically correct and useful in real life.