Update: So I recently bought a backwards compatible ps3. But it wasn't reading ps2 games so I asked reddit for help and most of the comments said “Replace the Laser Lens,” did
3 Ways to Play PS2 Games on a PS3 - wikiHow
i.ytimg.com/vi/LUFMhax6wVE/hqdefault.jpg
Which PS3 Is Backwards Compatible With PS2 - Guide - PlayStation Universe