Are your issues with Windows 10 and lightroom?
With Windows 10. Lightroom Classic runs fine.
I upgraded from Windows 7 to Windows 10 in December. My computer is Dell XPS 8700 from 2014. Some will say 'Well there's your problem'. It was working well with W7 and to be honest I'm a little offended about having to upgrade HW just because MS was dropping support for W7.
I was very disappointed in the quality of the software in Windows 10 given it's supposed maturity. It was behaving like an early release.. For every problem I encountered, there was an 'expert' on the net who would offer multiple solutions with the final one often being reinstall the OS. In other words, I was not the first to find these problems. When you post to answers.microsoft.com it seems only independent consultants are answering and in many cases provide a cut/paste answer around the area of your problem.
I also didn't understand why MS also added a new layer of implementation 'app packages'. Totally separate structure. Some can also be hard to remove if you are not going to use them. Fortunately, I found someone who posted a PowerShell script to remove these and associated registry entries.
I started way back with MS-DOS of floppies when you needed one floppy for the word processor app and one drive for the data so have seen OS's evolve. I'm familiar with Windows, Unix and MACOS. Windows has become a disappointment to me.
As to my wife's computer problems, there started to be problems with Tasks and Cloudberry Backup. I found that the physical location of C:\USERS\NAME\DOCUMENTS had changed to another physical name. Because of the way MS does things with file pointers, C:\USERS\NAME\DOCUMENTS still worked. However, other utilities like Cloudberry Backup Program and Task Scheduler, which deal with the physical name, got screwed up. No idea how that happened since it's not something easy to change.
So, you may be like me with a history of Windows but my next computer will be a Mac.