dum lil question: can i like - block an instance myself?

this is NOT related to that recent post here about blocking .ml.

i already kno that i can block users.

ive had very bad experiences from a certain... instance i would like to block entirely. i have been on the lookout for users commenting and interacting on the communities i care about, and that instance is... not so important to me. som of these peeps hav been evil to me before...

can i just like - block em? like - the entire instance?... or do i have to nicely ask the Ada <3 to... block it for every blahaj fren? (i dun want that! u peeps shud be able to interact with whoever u wan! i dun wan to be ur dictator <3 )