Might sound a bit of a silly question. I see people talking about threat models, and privacy guides which say things like “if this is part of your threat model, do X Y Z”. I’m just not sure if it’s a general “this is what I want to protect myself against” or if there’s more to it.
What are you scared of?
If you are worried your parents will see your browsing history, that is you threat model.
If your concern is government surveillance, you need to do more than just clear your browsing history.