A – Baal avera shouldn’t be a chazan
Q – Is that true for all sins or just some
A – All sins.you cant have chazan a sinner
Q – Is it true that its only if he practices a gay lifestyle?…
A – If a person made a mistake once he is still fine but if he continues he becomes what’s called a מומר
Q – are you even allowed to have a gay person count towards a minyan?
A – Yes. its only מחלל שבת and עובד עבודה זרה who aren’t counted
Q – What is considered a sinner? No one is perfect.
A – One who knowingly repeats sinning