i feel stuck and i’m not sure what to do

hi my names jack and i’m 15 from the uk and around 2 years ago maybe more i started smoking weed and around that time i stopped going to school and it’s only gotten worse i lie to my family and make promises to them and myself about going in and doing well but i just don’t i think it may have something to do with the fact my best friend that i’ve known my whole life also smoked with me but he goes to school and he’s always telling me im fucking my life up and i know deep down he’s right but i just didn’t want to hear it and i started ghosting him for no reason for weeks at a time when he asked if i wanted to meet him or even just him saying yo because i didn’t want to go out and i couldn’t be arsed and i know it’s a shitty thing to do rather than just telling him how i am but he’s always been a proper lad if you know what i mean and i don’t think he would understand what i mean and just think im weird and im not sure what im doing with myself at the moment i just feel empty and im just watching my life go by and i do want to do something with it and i do want to start going to school and get my gcses so i can do something with my life but i just feel stuck almost and im not doing anything about it then getting upset over it later because i haven’t done anything when it’s my fault. i dont know what telling the internet will do but im hoping someone has thru a similar experience and can help me find my way i guess