How come my friend irl always makes really weird friends on the internet omg

A couple years ago she was friends with this 15 year old emo guy who said he beat the shit out of some kid because he said he liked wizard 101

and the thing is she can’t keep her friends she loses them in like a mONTH

plus they’re always really rude to me one time this one girl she’s been friends with for like 2 years and just came back from a long ban was like:

“OH. WHO’S THIS” when i joined her chat and when she said that we lived next to eachother for our whole lives she was like “OH WOW. THAT’S A REALLY LONG TIME TO HAVE A FRIEND” and she’s always like banning me from joining servers whenever i try to play a game with them wHAT IS UR PROBLEM LADY