How to avoid de-anonymousation

mullvad browser and vpn with javascript on hate fingerprinting and anti fingerprint detection

sometimes logging in sometimes not, downloading things and pirating/torrenting

I dont want any account/session linked together to the same person

i can run ms but i dont know how to isolate if theyre the same network (i cant do anything on a network level since it isnt mine just on device

also idk if i should have a vm/different browser for browisng, logging in, and torrenting or just one/two

I would recommend to start by reading this Threat Modeling: The First Step on Your Privacy Journey - Privacy Guides and afterwards provide a bit more info on what you are trying to achieve.