Almost 21 and don’t know if I’m starting to get bald

[FunkyA]

Hi, I’m new here and I joined because I don’t know if I’m starting to get bald or not.
Someone told me that it looks like I’m getting bald and I was shocked because I always had good strong and long hair, I got a hair cut last week with my home machine and I need your help to figure if I’m starting to lose my hair or I’m just panicking with no reason.
Thanks.
https://imgur.com/a/tPmt5QP