AITAH for making fun of a girls s@?

i (16f) am on a insta gc with 200 people, this gc consists of only boys and i actually have a bf though he's not in the gc but thats besides the point.

everybody was absolutely flaming this girl and making fun of her, im actually a girls girl but i decided to join in and i started saying how her s@ story was bullshit and she was lying.

If im being honest, male attention is something ive kind of always enjoyed so I proceeded to make fun of her for her "trauma" despite knowing ive never met her irl

i feel like im in the right because i dont know her and it doesnt really matter, lmk though