Local Catalog Problem Win11

I'm getting this error messing when openening lightroom (latest version, not classic)
I can still access my albums on mobile and in browser. I've tried to reinstall it but the problem remains.
I tried to fix it with this method (from another support thread), but I don't seem to have the Catalog.cat file on my computer (running windows 11)
- On Windows Close Lightroom
- Hold down the windows key and Press R to bring up the run dialog
- Type %appdata% and hit return
- Navigate the file path through Local to Data and open the folder with a long string of numbers
- Rename the file Managed Catalog.mcat to Managed Catalog.old
- Delete the previews database
- Close Explorer and re-launch Lightroom
- Wait for sync to complete
On Mac OS start from Pictures and open Package Contents.
See Local Catalog Damaged for more information.
Does anyone have a quick fix for this?
