GATE

According to me, IIEST is better than NIT Surat, because in IIEST, you will get time to study for GATE.

I am also a GATE aspirant. According to me, if you are good in technical, then you should take a risk and drop a year rather than placement. After good GATE score, you have excellent career options.
Good luck.

According to me . There is less chances .
check this link: https://www.shiksha.com/college/shri-guru-gobind-singhji-institute-of-engineering-and-technology-nanded-21167

Material technology is not very good at NITS. In NITS there is not very pressure of work so you will get time for preparation.

Your GATE score should be more than 550 for this college.

Your GATE score should be above 500 for this programme.

GATE score required for IISC-Bangalore is more than 750. For safer side, your score should be 800 above to get good branch.

Elegibility of TUM is not score based its only 90percentile. It means under 20k rank.

GATE exam doesn't matter. All depends on GATE rank and branch. For example, in core branches, rank should be under 500 for ECE rank should be under 200 for PSU.

There are some best college for embedded system, so please apply following course in given college.
Top Colleges for Master of Technology [M.Tech. ]. (Embedded Systems)
MASTER OF TECHNOLOGY [M.Tech. ]. (EMBEDDED SYSTEMS) IN TELANGANA
MASTER OF TECHNOLOGY [M.Tech. ]. (EMBEDDED SYSTEMS) IN KERALA
MASTER OF TECHNOLOGY [M.Tech. ]. (EMBEDDED SYSTEMS) IN ANDHRA PRADESH
MASTER OF TECHNOLOGY [M.Tech. ]. (EMBEDDED SYSTEMS) IN KARNATAKA
ME/M.Tech IN DELHI-NCR
ME/M.Tech IN MAHARASHTRA.