After a while you get pretty good at it. I just run over it with the buzzer multiple times and run my finger tips over the back of my head a few times

Bro, you obviously do not look good like that. People can tell you cut your own hair. You do not spend enough time doing it for it to look nice.

I trim once a month

Yeah, they all know. Even barbers trade haircuts with other barbers. You can afford $20 once every 3 weeks.

Respect yourself. A good haircut (and working out) is like the cheapest way to look nice.