how to install tor browser in ubuntu 18.04 lts

It was suggested that I try other versions of Ubuntu - but that means loosing the files and data I do have. Note that you need to use the correct version of the files Help - I really would like to get of this merry-go-round that is nothing 'merry' about it. So, what with the failure? Neither the Internet nor Google can provide a install other than the one that was written and plagiarized by 129,999 other sites. Sudo add-apt-repository universe process. I've been trough to many sites to count that state 'Easily install Tor in any Linux.'. About 22 minutes later, the same error 'Signature verification failed'.YES, I purged it, rebooted then tried another trial and error from another site. After clicking on launcher, it took 15 minutes before 'Downloading and installing Tor browser for the first time' showed up (actually, it's now the 9th time in two days!).

sudo add-apt-repository universe & sudo apt update.Gits are too old, closed and can't start a new question cause they close it cause it was asked 10 years ago ! So, with that said: I did the following - again. Yeah - I read all of the other 'Tor won't install' here and at Git and at itsfoss.

How to install tor browser in ubuntu 18.04 lts