Hi Suraj, if you have cleared class 12 with PCM.. And 65%... You will be eligible to give entrance for many good engineering college in India.. So just prepare well for the entrance..
Beat of luck
Regards
Dr Parmanand Agarwal
MBBS MD
Career counselor

Appear for Manipal -MUOET. They need a minimum of 50% in class 12. If you score well in the entrance exam, you can get a good seat - https://engineering.careers360.com/articles/mu-oet. Then you can appear for SRMJEEE. They also ask for a minimum of 50% PCM. Appear for JEE Main. It doesnt matter if you have got 65%. See Satra University, Symbiosis, Thapar University all take on the basis of JEE Main scores. For Symbiosis you can appear for its entrance also which is SET. So if you have valid JEE main scores, you have a chances to get through.Sastra also asks for 60%. See there are so many opportunities. so buck up and get going. I am sure that you will get a good seat if you try. dont let the class 12 marks bog you down. there are many opportunities. Write back if you need more information