I installed W11 Pro on an unused 10 year old desktop (Dell OptiPlex 3020) a couple of days ago and it seems to be running just fine. That was a trial run before upgrading the church computer which is a similar vintage (Optiplex 7020.) It eventually activated automatically using the W10 digital key but it took a while for some reason. (had me worried for a bit)
I wanted to use the 23H2 version to ease into this, because 24H2 is supposed to have more stringent requirements, but I could not find 23H2 media from a trusted source. Rufus said the 23H2 iso I downloaded from archive.org had a corrupted boot loader, or something like that. It might have worked just fine but installed a rootkit or other malware.