Secondary School help

So I’m currently in my third year at secondary school . I went into secondary school with nobody from my primary school so it was a fresh start, I could make loads of new and different friends which did happen . However I did mix with the wrong crowd from year 7 through ‘til mid year 8 , they had a very mature , gang-mindset about them. To sum that point in my life up , they were leading me down the wrong path and I was a part of many many toxic relationships. Then mid way through year 8 I started to realise I didn’t want to be that person so I started to hang out with these two people (girl and boy) and they were the type of people who would lead me down the right path . Eventually we became best friends and everything took a horrible turn , the girl is VERY mature for her age, likes older guys, has mental health issues, is a very hard person to be friends with and me and her just started to clash. I tried my best to comfort her and be the bestest friend I could be but it wasn’t enough according to her and the guy best friend is completely ‘in love’ with her so he stays on her side no matter the situation . So due to that I began to feel very lonely in the friendship so I decided to end it thinking I can spark up new friendships within my school. However in my school I’ve tried to be friends with nearly everyone and it’s never worked out, and i don’t know if it’s me or just the fact that we just clash🤷‍♀️ so at the moment in school I’m very lonely , I have no friends and it’s hard because I do want to have people to talk to at lunch and break , I don’t want to have to find alternatives like not eating etc. My mum is looking at moving my schools but then that’s another problem , having to go to a completely new environment and try to make friends and get to know the different types of people. So I’m not entirely sure what I hope to gain from putting this up here but I guess it was just me getting this all of my chest . Thanks for reading all of this , I realise it’s quite long sorry.