Galgotias University

It's an average college. I would suggest you to try for better colleges with your MAT score like Christ University-Bangalore, XIME-Bangalore, XIMR-Mumbai, BIMTECH-Noida and ITM Mumbai.

You need to give entrance exam, whichever is accepted by the university and then appear for GD and PI. Once you get shortlisted for it as per the scores allotment, you will get admission.

Try to prepare yourself for premium institutes like IIM, ISB, Xavier, SP Jain, Narsee Monjee, IMT, IIFT- New Delhi, IIT, MDI, and FMS. You need to work hard in order to get admission in any of the above-mentioned institutes.
You can pursue MBA or B.Tech from any private university, but to get a placed in a good company is going to be very hard.
Lots of colleges and universities are there in India which claim to have good campus placement, but there is a conditional STAR (hidden from students before admission) about which you get to know after your action and reaction.

Galgotia College would be the best choice in terms of placement.

It's a good college with decent placements, for details check link :
https://www.shiksha.com/university/galgotias-university-greater-noida-37105/reviews
To know the exact scenario for faculty and placements get in touch with the current students through social media or in person.

Dear Fahad,
If you first want to do diploma in engineering, try in good government polytechnics in Delhi like JMI polytechnic, Pusa polytechnic, Ambedkar Polytechnic. After then, you can try for B.tech with a option of lateral entry.
Galgotia University is good for B.Tech but don't compare it with MBBS, don't compare medical colleges with B.tech colleges.
I am also giving you a list of good B.tech colleges in Delhi.
Hope it helps you.

Yes Aditi Mahavidyalya is a good option however it is not in main campus.

Galgotias Noida is definitely better in terms of placements and faculty

Check official link : http://www.galgotiasuniversity.edu.in/admission-procedure.asp

You can refer this link fro college information: https://www.shiksha.com/Ilam-Institute-Of-Logistics-Aviation-Management-Andheri-East-Mumbai-institute-college-listingoverviewtab-39552