Bangalore

If you stay in Delhi, then you have bright chance og getting IIIT Delhi.

Around 250+ corporates visit Jain University to hire students every year. Placement record is consistently good. Rs. 23 lakhs was the highest package and average package is around Rs. 4 lakhs.
https://www.shiksha.com/mba/course/pg-diploma-enterprise-management-pgdm-jain-university-ju-bangalore/253850
Go to above link to get more details about the college.

As per your performance in class 10th if you can repeat the same result in class 12th, I would recommend you to do B.Com from Delhi University.

Both are equally good. What matters more is where you reside and the location of your dream B-school. Anyway, there isn't a huge difference between the two cities in terms of good B-schools but in my opinion, choose Bangalore if possible.

Hi,
Kindly have a look at-
https://www.shiksha.com/college/nitte-meenakshi-institute-of-technology-nmit-yelahanaka-bangalore-27017/reviews?course=239404

If you want to get admission in good colleges then you must take entrance exams like CAT, CMAT, MAT, etc., and CLAT is not an MBA exam. It's an exam related to law.
Or you can get admission without the exam but through management quota seat or means donation. So talk to the related colleges where you want to take admission regarding this.
I would advise you to take exam like CAT, CMAT, MAT, etc., and get a good percentile and get admission on the basis of your marks.
Best of luck.