Same here. Resetting iphone or HomePod won’t work. Something’s corrupted in my account/iCloud

This issue is nearly killing me

Same issue with my 2k dell monitor and Apple Silicon MBP 13inch. I can barely see the words on my screen, and if I use 1080p, it becomes burry. I tried all old way I can find but all in vain. I just switched from a surface pro and barely believe that such simple function can not be supported in Mac OS, it is just somehow shocking.