Dear aspirant,
Some colleges have their own entrance exam. You can give this exam and take admission. Don't lose hope because of low score. Prepare for other entrance exams and get good colleges.
Thank you.

Hello Harshad,

I would like to tell you that don't lose hope as JEE MAINS is not the only way to get a good college.

Many colleges have their own entrance exams and some states have entrance exams for engineering so you can enquire about them as well.

Hope this helps and if you have any doubts, then feel free to comment down your query in the comments section.

All the very best to you!