Comment by jajko
A very effective partial solution - there is absolutely 0 reason to have any meta app cancers on phones/tablets. Just let them go, leave them for laptop/desktop and you are more than 50% there. This way they lose a lot of their instant addictivity.
Same goes for tiktok and similar other shit forming and then feeding on addictions. Everything becomes much easier afterwards, especially long term.
I removed FB apps quite some years ago when they were draining batteries of phones even when not used, a typical bad engineering that facebook seems to never get rid off (their web had always some issues, stuff doesn't work, feed doesn't load, comments fail or get posted 2x, albums don't upload all photos etc. with just ublock origin on firefox on fiber optic). I just don't need even their messenger, any worthy contacts can be migrated to other apps.
The exception to all above - whatsapp, simply too much used in Europe and literally everywhere else outside of US. But that's much better engineered product from start.
I've started dedicating Chrome profiles for the rare occasion I have to subject myself to Facebook (marketplace mostly).
There you go Meta, you can enjoy the 4 times a year I use your site (and no others).
No doubt they'll track me via many other means that ought to be illegal, but it feels like a good start.