is it bad that im glad my friends left

for context, i am a gymnast and i had been training with one girl lets call her Sally so i met sally when i was like 9-10 ish and we became rly good friends. Sally is very influencable and often only hangs out with ppl bc they are 'cool' and ditches someone else. So thats what happened. Another girl lets call her ' Mary', mary is 15. So when me and sally were 13 and rly good friends (at gym) mary decided that she wanted to do gym again( she used to do it at another club, quit and then decided to come back to our gym) anyways, mary and sally instanly became friends and bc mary was 15, sally thought she was rly cool and kinda ditched me but we were still kinda friends. I was almost 3rd wheeling (constantly tring to make them not hate me) mary is very judgy and didn't rly like being told what to do so she created alot of drama with the coaches (to the point where they would start crying and/or send us home) and since i was a kid, i always had a good relationship with the coaches so this rly upset me. i went into a really bad mindset and really hated gym and hated going. i was almost going to quit. anyways now, bc of the drama w the coaches, mary decided to move, and bc sally is oddly obssessed w mary, she moved too. They moved to a club that is about 1.5 hours away but that doesnt rly matter. There was only 3 ppl in the team, me mary and sally and a few kids from the younger steps. for about 3 months, the gym was a really negative place. on monday i had my first training without them and now i really love gym, the coaches arent mad at me and they reminded me that they didnt hate me and stuff like that. so im kinda glad that they left me. is that bad?