If the government (or other attacker) is in your home, it's easier for them to just record you typing and your screen. Even if you can somehow prevent visual recording (which is hard lol, none of your shit is TEMPEST shielded), modern neural net technology still means you can reasonably decode your key presses from the sound of your keyboard and a little bit of training that assumes some things based on the typical language you use when typing.

Really, you might want to consider living in a cave and not using the internet in this scenario if you have reason to believe your government is in your house trying to spy on you.
(;ﾟ∀ﾟ)

However, I know when traveling to certain countries, there are business users who get a fresh laptop loaded with only what they need for the trip, and the machine is fitted with anti-tamper seals. The laptop is destroyed upon return. Expensive, maybe a bit overkill, but corporate or governmental espionage is not something they feel like dealing with.
In this case, you might want some kind of heat activated stickers too to make sure everything isn't defeated with a hot-air gun.