So, that was an upgrade with or without using a bootable USB drive per post 19? (The former of which would mean reinstalling all app software, backing up and reloading all data (should be backed up anyway), etc.?
One of the not-so-minor pains of clean installs as upgrades is having to make sure one has saved things like spell check dictionaries, having to reset various app settings and customizations, etc. :-(
Now I've heard some say that has changed and now you have to download an image for Microsoft and boot from that. You should consult some Windows nerds in one of the online forums. (i.e. reddit, stackexchange, etc.). I'm not an expert and can only report what worked for me.
By the way, your processors are plenty powerful enough to run Windows 11.