Just pick one - All the Fox functionality without bloatware
Librewolf - https://librewolf.net/
Waterfox - https://www.waterfox.com/
Zen Browser - https://zen-browser.app/
More browsers here - https://alternativeto.net/category/browsers/firefox-based/
You can also use this add to disable the shitload ai function in many search engines in one go
https://addons.mozilla.org/en-US/firefox/addon/disable-ai/
GitHub page - https://github.com/jruns/disable-ai
You can find all the links on Mastodon<
There different kinds of AI and some run just fine locally or even on mobile. Not everything is a big LLM.