For somone like me, ( Not that good in chem, will solving these help .(read body)

PC meri strong nhi he, tbh puri chem hi weak hai as time nhi diya

N awasthi, neeraj kumar. I've seen these on this sub a lot recently.

Muje bhjo chem p kaam Krna h or adv level tk le jaana hai. but kya these books also contain some moderate problems jis se me adv se thoda neeche k level se improve kr sku?

If yes , then which one

Any other advise about chem will also help

And i messed up underperformed in my mains too...