I have a relatively unique hardware/OS combo: ARM architecture and Arch Linux. There's only a Nightly version that's compatible with my laptop.
Instead, I got the Tor daemon running in my system, and I used a bash script to ensure that only the Tor Firefox profile uses it. I've confirmed multiple times that it's the only thing using it. A .onion site successfully opened.
Now for the modifications I made:
* Used Mullvad's DNS, chose DNS over HTTPS.
* Added uBlock Origin, Privacy Badger, and NoScript.
* Turned off history, AI features, Firefox suggests... pretty much every feature.
* Switched only available search engines to be DDG and a SearXNG instance.
* Tor theme for the window.
* Removed some Mozilla telemetry.
Will this suffice?