B.Tech

In every aspect, SRM is way better than Galgotia's University so you can't even compare them. Galgotias is not even in top 100 colleges of India.

I don't have any idea what NTTF is so alter your question so that I can comprehend in a easier way

Yes, you can join and M.Tech robotics has a great scope at this point of time.

Definitely, a very good decision. B.Ed makes you eligible to have a TGT level job but getting a PG will make you eligible for PGT, that is lecturer level job. But you need to qualify the STET exams of respective states. If you do a PG degree with a good subject, it will surely make you strong and confident.

There are many good colleges for CS and IT in North India, some of the best options are:
SRM, Delhi
SRM, Noida
LPU
Amity University

Less chances but you should give it a try.

No, for lateral entry it's not a good rank. Around 100 is considered as a good rank for UPTU LEET.