For me I use the following:
Temporary containers - This add-on is so amazing and really helps when signing into multiple accounts
UBlock Origin - Add blocker, probably the best available
Dark Reader - Helps to make the web a little more readable and less harmful to the eyes
I tried installing it but got a security warning from Windows. I assume it’s a false positive ‘make sure you know what you’re doing’ situation, but I’d still like to know more about what’s happening