One of the best things about reddit was looking for answers or other users with the same problem as you, and since Google didn’t really help with that anymore and instead insisted on giving you business results, the best practice was to put your search terms in followed by ‘reddit’ and you’d find your answer.
Would this be corrected naturally by people using feddit as a search term more or does google have to manually patch this things?
I guess, but it’s highly unlikely that “vlemmy.net” or “feddit.de” will be more searched than Reddit.com in the next time
It will be corrected over time, I presume automatically. I was one of the first people with a Steam Deck and when I searched for things Google would “helpfully” autocorrect to StreamDeck. But eventually Google figured it out.