There's nothing to worry about just go for a good local college and try ur best in btech and make urself this much good that u nvr score a cgpa less than 6.5 . The recruiters only see ur btech cgpa's and ur skills.

Tmhara board me bohot kharab marks hai or jitne bhi acche college hai wo bhi admission tb lete hai hai jb 12th board me kam se kam 60% ho....

To mai ye kahuga ki firse ek bar board de do ya improvement ka exam de do

You can take a drop and prepare again for improvement exam of your respective board....and score good marks in 12th and jee mains.....you should start preparing from now.......but if you don't want to take drop then try for admission in bca or bsc and prepare for government jobs....best of luck