Googling it I see several people talking about the games being uninstalled. Others disagree.
Wondering if you install them outside the "norm" if they stay.
But let's be clear - YOU deleted them. You removed the launcher which removed the games.
A better title is "accidentally deleted games library uninstalling and reinstalling epic launcher"
How many of those are you actually playing? I wouldn't worry about how long it takes to reinstall a game you aren't playing right now.
Curious if "reinstalling" the launcher caused it to overwrite the founder where the games were installed..
This is a good explanation of the process https://www.reddit.com/r/EpicGamesPC/comments/czmumn/update_on_problem_uninstalling_egs_resulting_in/