MIM Admission low academic

Hi I am an B.Tech computer science graduate from India. My academic is not too strong.What are my chances of getting into a good MIM university? I am aiming for 700-720 gmat score.

The following is my profile -
10th class - 81.7%

12th class - 67.4%(Improvement Exam)

My main concern is I have a year gap after 12th actually I have given improvement exam(for all the subject) & gonna show my improvement percent only.

College(Amity) - 74.5%(2019 pass out)

I dont have any work experience.

I am aiming for NUS, SMU, Essec Business School ,ESCP Europe ,IE business school ,University of St Gallen for masters in management?

I am planning for 2021 batch because I gonna give my gmat January end so my chance chances of admission in 2020 is nil.
Thanks in advance.