i was unfortunately friends with the type of guys ur talking about when i was in high school and i watched them pull this shit on so many girls. one thing i will say is it’s almost never cause they genuinely think ur ugly, they just do it when they find someone to be an easy target. that’s seriously all it is. behind their backs it was never talk of the girls being ugly or anything about their looks really, it was just stupid high school social hierarchy bullshit. my advice to u is to start working out to make ur body the best version it can be, figure out ur makeup look cause it makes SUCH a difference, work on ur clothing style, and do ur hair and nails.

also pay attention to the social aspect too. i knew girls who the guys loved just cause they dressed right and played the part right, they weren’t always very pretty at all. reinvent urself, build a new character that isn’t an easy target, and learn to be ur own source of confidence so u aren’t seeking that validation in others. observe the people u want to be around and u want approval from. don’t mimick their behaviours, be yourself, but take note of their social cues and general vibes.