Brave install

[stevef]

I am new to linux so decided to try Linuxlite

Welcome. Sorry to hear you are having problems installing brave, but with the information provided it's only possible to guess at what is happening.  We'll probably need to see the actual errors before being able to suggest anything (unless someone happens to have experienced the same issue).

The "preinstalled" chrome browser doesn't launch

There was a reported issue starting chrome from Live media in Linux Lite versions 7.0 and 7.2.
There is a workaround for 7.0 and 7.2 and a fix is expected in 7.4.
Perhaps the issue with launching chrome from your persistant install is related to the Live media launch problem. If you try opening a terminal and starting chrome with this command...

Code:

google-chrome-stable

..the terminal will show what's happening. It will almost certainly report some errors even if chrome starts ok, but if you see a Fatal error post it back.