I feel like I’m developing anxiety around school

(Idk if anxiety is the right word it feels to intense) I used to really like studying and going to school last year. I’m 15 now and whenever I have to look for a paper/worksheet I need or a textbook or file or whatever I feel very stressed and dizzy. When I think of pending work I just start scrolling on TikTok to try and numb myself because it almost makes me feel nauseous. I honestly still really do enjoy studying on my own but when it comes to stuff which has been assigned by teachers I can barely deal with it. I’m lagging behind a bit and have work lined up to do because I was sick a lot and I missed school because of it. When I try to distract myself from it with YouTube or whatever I don’t even enjoy that it just feels numb. I don’t want to go to school anymore i just want to cry at home. When I try to study myself like I used to I go “I have that work due I should do that” then I go try to do it then I can’t focus anymore and I’m like “I should study” then I bounce back and forth and end up doomscrolling