Central Board Of Secondary Education [CBSE] — Less marks given in cbse class 12th result

Sir,
I am student of class 12th 2020-21and i completed my 12th from J.A. Saraswati vidyapeeth school bainsi, rohtak in this pandemic cbse follow new marking scheme for students of class 12th in which board consider our marks on the basis of performance of past 3 years but cbse not follow there own marking scheme as a result i am of this i get compartment in 3 main subject in my class 12th and many student in our class getting compartment or getting very less marks we want justice for our future please help me and investigate this issue as soon as possible