Am I the asshole?

AMITH? My bff (15f) (not now) we will call her L got mad at one of my other friends (13f) we will call her S bcz she got called immature and since they are both really close friends I stayed out of it and didn’t stand up for anyone. I asked one of my friends (14M) Z if I was in the wrong and ofc told him what happened he never replied. He ended up telling L that I talked shit abt her which I never did and came over to my house to make me apologize and to set a “boundary” this “boundary” was that I couldn’t talk to our mutual friends which was 5 people (T, Z, J, L, & E) I told her that T doesn’t like her and that I’m still talking to T she said why ever just don’t make her hate me. I had also told her that I only have 1 other person that’s not on that list that’s one of my friends since I was friends with this girl that everyone hated so now everyone hates me. Later that night I explained to L that T has too may problems on her plate so I needed to talk to someone else she told me I can talk to J. I told her I don’t talk to J that often anymore and E is one of my closest friends. She told me I can only talk to E as a last resort. I told my mom abt this and my mom said that’s toxic and she doesn’t pay your phone bill. I have talked to EVERYONE on that list. I got the flu and one of my other friends that sits next to me in this bus, which we sit next to L and E and diagonally from L’s little sister, (we’ll call her TE) who’s best friends with my sister that they all were talking shit abt me especially E who I thought was one of my best friends. She told me that they kept saying I’m a lair and I run my mouth to much that’s why I don’t have any friends. I remembered that L texted me saying “And good because I wouldn't trust u with my wifi password because I cant trust u to keep my name out of your mouth” when I should’ve texted her that. I’m going to be out of school for the rest of the week and my friend on the bus will let me know if they saying anything else. AMITH?