I think I went one step further because all of my tabs by default is another temporary container. I have been using https://addons.mozilla.org/en-US/firefox/addon/temporary-con... extension which allows you to create completely clean tabs every-time you open a new tab.

I know this might sound crazy but I am so used it by now so it doesn't hurt much anymore. Also, I can login to any website with 1-3 clicks thanks for password managers so not a big deal.