I have been running various linux distros on laptop/desktop/servers since I was in diapers and can say they are very stable and ready for the masses ... Ubuntu 20.04 is a solid choice ... whenever a neighbor moans about their slow PC I convince them to allow me to cut over to a fully Ubuntu box to free them from the malaise of those two legacy OS choices ( MS and osx ) ... all it takes is courage to take the leap ... long live linux
The problem with linux on the desktop is not that it is not improving, is that it always needs to improve.