It's working now. I got some errors after running the command in Terminal, but it seems like osu! is still working fine with them. Here's what popped up if you want to look into it
Thanks!
xattr: [Errno 30] Read-only file system: 'osu!.app/Contents/Resources/dosdevices/z:'
xattr: No such file: osu!.app/Contents/Resources/dosdevices/d:
xattr: No such file: osu!.app/Contents/Resources/dosdevices/d::
xattr: No such file: osu!.app/Contents/Frameworks/libidn.11.dylib
Thanks!
xattr: [Errno 30] Read-only file system: 'osu!.app/Contents/Resources/dosdevices/z:'
xattr: No such file: osu!.app/Contents/Resources/dosdevices/d:
xattr: No such file: osu!.app/Contents/Resources/dosdevices/d::
xattr: No such file: osu!.app/Contents/Frameworks/libidn.11.dylib