at what point does drinking become problematic?

i just turned 21 a few weeks ago and i can’t help but constantly wonder at what point drinking becomes problematic so i can avoid getting to that point. i’ve been enjoying some wine after work on fridays, to chill out after a long work week, and i drink for holidays/birthdays. on average i don’t drink more than once a week at most. alcoholism runs in my family so i overthink it and just worry about it eventually becoming an issue down the line, my hope is that by being hyper aware i can avoid it. but i just don’t know at what point it becomes a problem. i recently quit cannabis as well, so i fear that i’ll unknowingly start compensating for that with alcohol instead. i just need someone else’s input to put my mind at ease.