Ouch, I believe that I know exactly what you have done - I have been warning people about it since it became apparent that the Disk Analyzer / Duplicate Finder in CCleaner7 had changed from the previous tool - and was now dangerous if run carelessly.
It now finds ALL duplicate files by default, there are no filters to the scan.
It also has a ‘Batch Select’ that allows you to select duplicates en-mass for deletion.
The combination of those two things means that with just a couple of unthinking clicks you can easily and quickly delete hundreds of NEEDED System File and application file duplicates.
Which in turn means that your computer and apps will stop working properly.
I do not understand why/how the developers did not realise that the combination of those two changes make the Tool as it now stands an accident waiting to happen in unwary hands.
(In my opinion the new Registry Cleaner is also too dangerous as it now stands).
Having done the damage you will now need to repair or reinstall the Windows System and repair or reinstall any affected apps.
Id suggest getting Window back in full working order before repairing/reinstalling any apps.
As modern CAD software such as Solidworks is subscription rather than bought outright then I would contact Solidworks for help with reinstalling it.
Same with any other apps that have been affected.
You best bet is if you have made a full system image backup with Macrium Reflect, Acronis, Aomei, Easeus, etc. that will put your System and app back exactly as they were.
Failing such an image backup you will need to do the repairs or reinstalls manually:
PS. I do strongly suggest that once you have things back to where they should be you start making regular system image backups. Most techies consider them essential, particularly if you have expensive softwares and important files.