You may have heard of the "Countering Violent Extremism" program under DHS.
They've deployed the tactics used to fight terrorists against domestic citizens. For example, incels. When I posted on the web forum incels dot is, I didn't know it was Department of Homeland Security operation against men who say they are romantically deprived. I didn't know I was interacting with larping feds who encourage extremist rhetoric. Consequently I was put on a watchlist and am subject to intrusive monitoring.
I share a lot of my experience here.
https://twitter.com/WrongedIncel
My question is, my computer is hacked by them and they are privy to my computer activity -- as in, right now, they're seeing me type this post. How can I get these rats out of my computer? I just run Windows 11.
Given your scenario your computer is totally compromised, you can't trust it.
The eff has a guide to help you:
https://ssd.eff.org/
What defense is there against NSA tools like Pegasus? I'm not kidding when I say they use my phone as a recorder to capture my interactions in the wild (in addition to having people from fusion centers follow me around.)
if you know your computer and phone are compromised, i would think the solution is obvious, stop using them.
If I get a different device they just compromise that too. What defense is their against the NSA?
In your scenario any device you get is compromised when its linked to you.... don't get a device, and don't link it to yourself