Hello aspirant

I would suggest you to give previous year papers as test which you will easily get free of cost on allen s testmyprep online platform, they have also provided drill tests for mains and advanced which are free too.They are of good level and also you can practice from abhyas app s lastly added papers like from 30 onwards, they are of good level.

So , I just gave you solution to your problem where you can ace the exam without paying a single penny.

Hope this helps. All the best.