looking for advice

i got 130/200 in net 1 i didn’t attempt net 2 due to personal reasons. now, Im preparing for net 3. i scored roughly 50% in eng & 60% in math, so obviously, these are the subjects i want to improve the most. i covered eng & math from the doger brothers book, but there weren’t enough mcqs there.i feel my biggest flaw in net 1 was not practicing enough mcqs. can anyone help me with where I can study more mcqs, preferably from free online resources?