Если я виноват, я стараюсь сразу извиниться.

Because виноват agrees with the speaker’s gender.

• A male speaker says я виноват.
• A female speaker says я виновата.

So the sentence as written sounds like it is being said by a man. If a woman were speaking, it would be:

Если я виновата, я стараюсь сразу извиниться.

In Russian, the verb to be is usually omitted in the present tense.

So:

• Я виноват = I am at fault / I am guilty
• literally, Russian does not say я есть виноват in normal speech

But in other tenses, forms of быть do appear:

• Я был виноват = I was at fault
• Я буду виноват = I will be at fault

Here виноват is a short-form adjective used as the predicate of the sentence. It means something like at fault, to blame, or guilty depending on context.

This short form is very common in statements like:

• Я виноват.
• Ты виноват.
• Кто виноват?

It is the normal way to say someone is at fault in a situation.

Sometimes, yes, but the nuance is different.

• виноват = the normal everyday word for being at fault
• виновен = more formal, official, or legal-sounding, often closer to guilty

So in this sentence, виноват is the natural conversational choice.

Compare:

• Если я виноват... = If I’m at fault... / If it’s my fault...
• Он виновен в преступлении. = He is guilty of a crime.

Because если introduces a subordinate clause: if I am at fault.

In Russian, a subordinate clause is normally separated from the main clause with a comma:

• Если я виноват, я стараюсь сразу извиниться.

This is the standard punctuation pattern for если clauses.

Because this sentence expresses a general habit or usual behavior, not one specific future event.

So the meaning is:

Whenever I’m at fault, I try to apologize right away.

That is why Russian uses the present tense:

• я стараюсь = I try
• если я виноват = if I’m at fault / when I’m at fault

If you wanted a specific future situation, Russian would more likely use future forms, for example:

Если я буду виноват, я постараюсь сразу извиниться.
= If I’m at fault, I’ll try to apologize right away.

Стараться means to try, to make an effort.

In Russian, this verb is followed by an infinitive:

• стараюсь извиниться = I try to apologize
• стараюсь понять = I try to understand
• стараюсь помочь = I try to help

Here стараюсь is:

• 1st person singular
• present tense
• imperfective

The imperfective makes sense because this is a repeated, habitual effort.

Because извиниться is the perfective infinitive, and it fits the idea of a single completed apology.

The sentence means that when the speaker is at fault, they try to do one definite action right away: apologize.

• извиниться = to apologize (as a completed act)
• извиняться = to be apologizing / to apologize repeatedly or as a process

Since the sentence also has сразу (right away), the perfective verb sounds especially natural:

• сразу извиниться = to apologize immediately

This is just how Russian expresses to apologize: извиниться.

The non-reflexive verb has a different meaning:

• извинить (кого-то) = to forgive / excuse someone
• извиниться = to apologize

So:

• Я хочу извиниться. = I want to apologize.
• Пожалуйста, извини меня. = Please forgive me / excuse me.

You can also build phrases like:

• извиниться перед кем-то = to apologize to someone
• извиниться за что-то = to apologize for something

Сразу means immediately, right away, or at once.

It shows that the speaker does not delay the apology:

• я стараюсь сразу извиниться = I try to apologize right away

Its position before the infinitive is very natural and neutral. Russian word order is flexible, but this order sounds smooth and standard here.

Because Russian often repeats the subject in the main clause, especially after an opening subordinate clause.

So this is completely normal:

Если я виноват, я стараюсь сразу извиниться.

The second я helps clearly mark the start of the main clause.

In casual speech, Russian can sometimes omit a pronoun when it is obvious, but here repeating я is the most neutral and standard choice.