Trust is hard to gain, very easy to lose. And much harder to regain, once its lost.
I have been a Firefox user since... its Mosaic days. And even after Chrome became a thing, FF remained my default choice. It was just my browser, I would shrug at anyone telling me Chrome was so much better.
Alas, their recent switch in regards to data/ads and after that their focus on AI, after a few previous decisions of them that quite worried me too, convinced me to do what I had never imagined I would do: replace FF as my default browser.
I now use Waterfox, and if Firefox is still installed on my Linux box I have not used it since (I'm a liar: I clicked it once, out of habit). I just don't feel comfortable using it, it's not my browser anymore. It's just a browser, like Chrome or Edge, some corp is trying to force feed me, and to screw me with. Thx, but no.
I would love to see FF change path and regain my trust. But this will take some efforts.