NatureMC, (edited ) If you get a #followRequest without your account being locked, the #admins of your #instance have paid attention in advance and warn you about a suspicious account. You can still allow it as a follower, but the one today was indeed extremely suspicious and rubbish.
Friendly reminder: To thank your admins and instance for all their work you can #donate! Find the possibilities on your instance's page. The #Fediverse is #adfree but good #moderation/building instances costs time/money. And - tada: