Ublock Origin is an obvious one, but I also can’t stand not having Foxy Gestures anymore. It adds customizable mouse gestures, so you can set it up to have easy swipes to go back a page, reload a page, close a tab, etc, and it feels wonderful and smooth to use compared to just using the traditional buttons to do everything. Honestly it’s kinda wild to me that this isn’t more popular now that people are so used to phone gestures. It’s good for the same reasons!
You’ll have to use firefox collections with either Nightly or Beta, add the addons you want to a collection and add the collection in ff mobile then you can use the addons. https://www.ghacks.net/2022/10/20/firefox-beta-for-android-now-supports-custom-add-on-collections/
I also had to export LibRedirect settings from desktop and import on mobile because the settings interface is a bit borked. There is also Privacy Redirect which should work out of the box.