Sorry to hear you have such a bad experience with /e/OS, for me on my Fairphone 4 things run quite smoothly for 1.5 years now, of course looking for a lot of information in the forum, writing the helpdesk, raising issues on Gitlab…can be frustrating but to me that’s normal life of open source and collaborative dev.
To me the strength of /e/OS relies also on its flexibility: you don’t like the default launcher, install another one. The Mail app bugs, install an alternative one…etc. Hence this page for recommending alternatives.
Good luck.