Just tell them. If they don’t like you back, it’s probably not a huge deal. Most of us are like 9-15 yr olds so ya. If it make your friendship awkward, well, aren’t all friends awkward at first? It’ll be like remaking your friendship. Don’t worry about it, it’s probably not going to hurt you terribly. Ik I’m a hypocrite, I would never ever ever tell my friend I had a crush on them so ya do whatever the heck feels comfortable.