Can someone please just tell me this

chp 1 and 2 ive solved all oswall and revised yesterday all derivations chp 3 i dont get i did but dont get 0 pyq chp 4 0 pyq skipping chp 5 done with all pyq but idk dont feel good about it chp 6 tried but not getting chp 7 it is easy but need to do chp 8 done +pyqs chp 9 need to solve all pyq's again and revise derivations chp 10 need to revise (will do 9 and 10 in morning) chp 11 done all pyq's and revised chp 12 done all pyq's and revised chp 13 done all pyqs and revised chp 14 done all pyqs and revised

I keep on feeling that I wont know anything and I will fail please someone help out ik ive done stuff but I think I don't remember anything I've done at all😭😭