hello,

You can try the NTA link:- https://www.nta.ac.in/Quiz

This link has lots of questions and gives an exam environment with a timer. You can improve your performance by using it and improve your performance.

You can also use the link:- https://engineering.careers360.com/articles/jee-main-mock-test

You can read the previous year sample papers too. Link:- https://engineering.careers360.com/articles/jee-main-sample-papers

You can also practice previous year papers to know how questions are asked in the exam.

Hope it helps!