Turns out it was a corrupted icon store and I couldn’t see it until I logged into the root user. https://discussions.apple.com/thread/253834128

I’m really confused I’ve never really been a developer or used these forums it’s just that I can’t post this in the normal forums. I don’t have any Time Machine snapshots and haven’t made any new APFS Volumes besides simulators (Is there a rare to eject them when not in use??? They take up ~30 gb, which is most likely not the problem as the problem is 100+ gb) here’s a screenshot of the command "diskutil ap list": I‘m not running as root, is that the same or different from the root user? Should I use the root user to try to find what’s taking up that storage?

At some point, I restarted my MacBook and successfully installed the app to the simulator. However, I’m not keen on having to repeat this process every time I want to test the app.