Thanks for the reply
Yes, I also had an Ubuntu distro, which was working fine itself
After a bit more searching, I came accross
https://github.com/rancher-sandbox/rancher-desktop/issues/3785#issuecomment-1409332839, and tried the suggestion of removing the Ubuntu distro(s), then followed by a factory reset of Rancher using rdtcl, which seems to have solved the issue with Rancher starting up
I don't really need the Ubuntu distro, so I guess that's alright. Though it would be nice to have it. Perhaps if I try re-installing it now I will be ok?