Re: Browsers
I love Vivaldi, personally. The email is a bit brutal but I do like it. Like you, I gave up on Thunderbird, not so much because I've found problems but just because it seems to be trying to do so much in the same program it's just silly. (Still not found anything half as good as my old Psion or Lotus Organizer, either).
Brave is nice but not too bad. I use it mainly for my RSS reader as it is a bit more hardcore about blocking trackers and so on.
Safari I still use for my online banking (and nothing else) because the banks seem to be a bit dim.
Chrome I use for testing websites for work. And sometimes Edge, if I can stand it.