i’m only 13

so i’m 13 and ik some people will get upset bc i’m young but i’m so mature and look sm older no one believes me when i say i’m 13 !! but i really wanna masturbate and idk how everyone tries to explain it but i really don’t get it i’ve been trying and ugh and i CANT CUM but i really want to idk if anyone could help me out that’d b so great thank you in advance !!