Replying to Anyone else have a bad highschool experience?

When I was in middle school, I was freinds with all the kids on my neighborhood. The town was a fun place to grow up. Then freshman year came and it all changed. My town felt completely different. I barely know my once best friend. I went from making As and Bs with no problem, to working as hard as I could to make a C. Barely know my old freinds. I spend my lunch periods in the library most of the time. Doing nothing. In middle school I'd go to the park with my freinds aftee school. Now I sit at home. Doing nothing.