I would strongly urge you to reconsider this voting strategy. By voting 3rd party, you are saying that you are fine with Donald Trump becoming president again which I believe is many times worse than what you have a problem with the current administration. Is him becoming elected really a better outcome for the overall future? While an important issue to you, you’re exposing a flaw in our election system in that your non-vote is just about the equivalent of a vote for Trump.
My company enforces specific add-ons for Firefox so I installed and use LibreWolf which our admins don’t lock down - only Chrome and Firefox. I wanted a browser that I would use separately from my work that didn’t specifically need their add-ons which include traffic sniffing crap. I know that if I want to do any personal browsing and guarantee it’s personal, I should use my own device but I was honestly just annoyed by the additional CPU cycles the security add-ons were using.