How to free up space by managing Google Drive sync
... and for me it kept filling until I had no space available on my HD. After going through all advise on Apple Support to no avail, I realised that my Google Drive Sync is actually downloading the files on my HD. After pausing drive sync and deleting synced files on my HD it also decreased the SYSTEM DATA.
[Re-Titled by Moderator]
MacBook Air, macOS 15.0