Hello,

for JEE Main , yes you can get an college but private college or state level government college through counselling only. or you can go for direct admission.

for UPSEE your marks is good enough to give you a quite a good rank and if you have any category then that will be more helpful.

yes you can get ECE in college. Government may be difficult.

you can use the upsee college predictor for college list as per your rank:- https://www.careers360.com/upsee-college-predictor

Hope it helps!