I get this completely! Anxiety is hard and finding a coping mechanism is hard too! Try find something to help you cope (it doesn’t have to be the best) I don’t mean self harm or anything dangerous! As for school settings - talk to your teachers before hand and explain that you need extra support and time to settle in so not to ask you questions straight away as it panics you, they will understand and may have pastoral support to help too! You will gain confidence as you settle in. I’m not going to say don’t worry - but don’t stress too much, their are options and alternatives