I use LibreWolf (a more secure fork of Firefox) and have enabled automatic cookie deletion when I close the browser. I have whitelisted only a few websites that I regularly use, such as Twitter, YouTube, GitHub, and LinkedIn. I understand it's not an ideal solution, but switching profiles and using multiple browsers can also be inconvenient. Personally, I find Firefox Containers to be less user-friendly and challenging to set up. If anyone has a better solution, please let me know!