You might try finding a classroom or area that isn’t being used on a consistent basis. So maybe the band practice area or an arts/crafts class or library or some place, you may want to check with a teacher beforehand. It can be hard with school though, depending on how locked down they have you. For myself personally when I was in school 20+ years ago, I was able to retreat into myself with headphones and music, I was able to block everyone around me out no matter where I was at. Sometimes you can even just walk the halls, walking by itself has been my go-to therapy methods, just walk away and get a change of scenery for awhile. Everyone needs mental health breaks if things are getting overwhelming.

Also, remember that school essentially stops mattering after you get out. Yes, it’s important to graduate and get a diploma, but you’re likely to rarely see those same people ever again after you graduate. I’m 43 and I still have days like that where it feels like no one cares, and I’ve got a partner with kids, it’s tough sometimes.