With 64 marks in COMEDK your expected rank will be under 30,000 .

You can get admission in---

Dayananda Sagar college, Bangalore

Acharya Institute of Technology

Siddhaganga college of engineering, Tumkur.

KLE Technological Institute, Hubi

You will get CSE if not that will depend upon comedk cut off 2021. Cut off depends upon number of candidates appeared and qualified in exam, difficulty level of exam and previous year's cut off etc.

You may follow the link given below

https://careers360.com.engineering/comedk-college-predictor