Hi vOda.
What's good is that you are aware that your drinking is becoming habitual. And also that, when you drank too much, you acted in a way that you regret.
I think it would be a good idea to try and stop drinking for a good while and see how you feel. Don't give yourself a 'pass' because it's a special occasion or because you've had a bad day. No drinking at all.
This might help you decide whether you really have a problem with it.
My son is 23 and a while back I worried about his drinking. But he doesn't drink at all during the week now, and just drinks with his friends on a night out occasionally. He certainly had a few nights when his drinking was problematic though, but I now think it was just his age and he moved through it.
You mention that you've nothing to do in the evenings except drink and listen to music because you have few friends. Maybe this is an area to work on. Find people who share the same interests, and get to know them. To give up drinking, we all had to change our habits and routines.
Wishing you all the best.