I found I could go back to Windows 8 with no trouble at all...it took ten minutes and I did it on my own...Reuben was cross 'cos I complained so much about Windows 10...I know I said Windows 11...was a bit puddled.
Apparently you can only uninstall Windows 10 for one month after you've installed it...at least that's what it said.
Everything came back...all my Favourites and everything in its proper place again...yippee!
I do feel very sorry for anyone struggling the way I was...wouldn't be wishing it on anybody.