Is there any hope for an average or below average student who desperately wants to study engineering?

You can practice engineering mathematics before pursuing engineering as it will help you in 1st and 2nd semester.

Yes, of course, if you are really interested in learning.

Yes, definitely. You can study engineering if you are very much interested in this course. You can give entrance exams and take admission in engineering colleges and do your best to get good engineering college. After that during engineering try to get campus placement for better career or you can g