Epic Games Launcher update broke the launcher, then broke everything

Hate to be a downer but seriously, worst update ever. There needs to be better QA or a rollback option. I couldn’t get the launcher to run at all after the update, kept giving me errors, saying it wasn’t installed properly or something. Easy, I thought, uninstall Epic Games Launcher and reinstall it. But that also deleted all my Unreal Engine installs and all my plugins, now a bunch of my projects are broken and instead of working on my game today I failed to even get the engine working again. It is not intuitive how to re-add projects either. There should have been an option to let me keep my Unreal Engine stuff when I deleted the launcher, someone might rush to defend this broken update and say I was just dumb or something, but if it happened to me it must have happened to a bunch of other users.