Hello Priyanshu!

Firslty getting too many degrees really don't help much. You are doing B.Tech in civil engineering. Shifting from civil background to MCA all of a sudden without having prior experience in computer science, is not wise choice. You can do however, there is no issue with that. And pursuing again MTech after MCA is not required at all. You will be just spending too much time in getting degrees.

When it comes to real world, what companies ask for is skills and experience the most. So instead of getting multiple degrees, join a separate course in Computer Science from a authorized coaching centre with certification. Practice coding, front end development etc. That would save your time as well as enhances your skills.

All the best!