Hello Niveditha,

Hope you are doing well, As you've mentioned that your engineering ranking  in kcet 2021 is 50000, with this rank your chances of getting  seat in top engineering colleges are low, But you may get seat in good college, Wait & try for all rounds. Here are the colleges where you have good chances of getting aerospace engineering seat through kcet:

Dayananda Sagar University, Bangalore

MS Ramaiah University of Applied Sciences, Bangalore

Alliance College of Engineering and Design, Bangalore

MVJ College of Engineering, Bangalore

SJC Institute of Technology, Chickballapur

ACS College of Engineering, Bangalore

Also you can predict your college for KCET 2021 by following link:

All the best!

Hope this helps you