I haven't used reddit much in years, but i remember racism there being a huge problem. I checked again and it seems a lot of the far right shitheads splintered to another sub, which unironically believes in the great replacement. (/r/europe_sub if you want to see how bad it is) so I guess that curbed down the number of Nazis there.
I don't know how r/europe is nowadays but i probably should've checked, sorry :p
Thanks for the link! I heard the devs of Lemmy, on the other hand, censor comments opposed to Russia's invasion of Ukraine. So I'm much more interested in trying Piefed.