How do I clear my system data/turn on mic/media/camera access in apps

My storage maxed out for like the 50th time and this time, it’s breaking permissions from apps like discord. I can’t turn on my mic/camera or send photos. Also, when I try to clear photos, system data starts filling up out of no where taking place of the deleted photos. Please help me. I’m legit crashing out. I can’t send a screenshot because I can’t access my photos on Reddit 💀