Hello Aspirant,
Here is link for tkm college. For detailed information visit the below link.
https://www.google.com/amp/s/www.careers360.com/colleges/tkm-college-of-engineering-kollam/amp

For rajagiri college visit the below link.

https://www.google.com/amp/s/www.careers360.com/colleges/rajagiri-college-of-management-and-applied-sciences-kochi/amp

Both the colleges are good. And having higher rating.

Hope it helps
All the best!