This is the 11th most frequent Croatian word.
bi
"Bi" is the Croatian conditional auxiliary verb, meaning "would."
In this sentence, 'bi' is used as part of the conditional verb form. It indicates a hypothetical scenario (I would have more time) and is coupled with 'bih' to form the first person singular conditional.
Ako bih imao više vremena, napravio bih tu promjenu.
If I had more time, I would make that change.
Here, 'bi' is combined with the second person singular 'ti' to form the conditional verb form, used for expressing hypothetical situations.
Što bi ti uradio da si na mom mjestu?
What would you do if you were in my position?
In this case, 'bi' is part of the conditional form for the third person plural. It expresses a hypothetical state related to desires or intentions.