I am scoring full marks in VA, but my RCs get messed up. Most of the time i cant relate to answers given on cracku mocks. Any suggestions?

help me in va only , i even not able to score in va

RCs are always subjective. There are no single answers in RC. There are only better options.
Also, I have found some of the answers in the RC of VARC sectionals to be ambiguous, but most of them are top quality. But haven't found any problems with Dashcat RCs.
The best RC preparation material is hands down, previous CAT papers especially 2019.
If you can score 50%(percentage) or more with tough Cracku RCs(sectionals), the real CAT paper will be a walk in the park.