How do I tighten this toilet seat?

[FloowToilet]

Just moved into a new place and the toilet seat is super loose. Spent about 2 hours trying to figure out how to tighten this toilet seat. I did try unscrewing it from the bottom, took it out and inspected it but couldn't see any obvious way to tighten. Tried screwing the bottom screws in tigher but it's still really loose.

 

[FloowToilet]

Welp right after posting this I got the seat off... Just had to yank significantly harder than I thought... Was afraid to break it