Hello! Congratulations on completing your 12th and JEE Mains!

With a 74 percentile in JEE Mains and 71% in your 12th boards, you may find opportunities in private engineering colleges and some state government colleges, depending on your category and home state quota.
Top NITs and IIITs might be difficult at this percentile, but you can still get good private colleges like Amity University, LPU, UPES, and colleges under state counseling (like in Haryana, Punjab, Rajasthan, etc.).

You can also use the JEE Main College Predictor by Careers360 to find suitable colleges:

Stay positive and apply through state counseling and private colleges as well!