HOW TO GET 75% IN CLASS 12 FROM ZERO NOW?

# PLEASE HELP KR DO HAATH JODTA HU I am so much depressed I can't even watch a lec properly , i am trying to watch lec for board but question bnte hi nhi ab rona aata h roj 2 saal pdha nhi na dost bne na khuch kiya mushkil se practical and viva diye h ab smajh nhi aa rha kya krru especially physics hota hi nhi mujhse lec smajh aaye tb v question hote nhi aur uppar s vijeta series ka 1 lec krne m pura din chla jata but fir v quetion hote nhi ncert smajh aa nhi rha kya krna chaiye please help kr do yaar aur lag nhi rha chem and maths hoga v ab lag rha fail krunga ab ( 10 m 94 aaye the ab ye haal h )