80 gigabytes just disappeared

For a couple months I was constantly at 70% SSD usage or 180gb out of 256gb. Just recently I opened my MBA, checked my menubar, and noticed I was now at 40% SSD usage. I went from using 180 gigs to 100.

At first I thought maybe some software that had access to my files like Syncthing or MEGA deleted my files but upon closer inspection nothing was missing. The only notable thing I did that day was turn off Apple Intelligence, but I'm pretty sure my disk usage was already at 70% before Apple Intelligence even came out. I'm wondering if my Mac decided to just purge of bunch of cache? I feel like if there was 80gb worth of cache somewhere I would have noticed though...

Have any of you guys had something like this happen? Any idea what got deleted?