CBSE 12th

Well GLIM takes students based on their profile. You have an average profile and also the job experience matters I.e in which domain you had an experience. And also, it takes the cream layer since it doesn't have huge strength. Only 95-99%ilers in CMAT that too with an extraordinary profile can make it to GLIM as it also takes students from other entrance exam scores.

You need not repeat. See 60%as just an eligibility criteria you have fulfilled to sit in competitive exams. Work hard and score good rank there to get into a good university. You are eligible for several art courses as well like fashion designer, law, architecture, MBA MCA etc. See the course ipm from IIM Indore, very promising and fabulous packages like 68 lack pa.

Please clarify which course you want to take admission into. it seems like you want to take BBA, B.com, Eco(hons) or MBA course. You are eligible for these

What was your stream in class 12th? You can also use this link
https://www.shiksha.com/careers.

According to my knowledge, there is no entrance exam conducted, but marks of class 12 are taken as judging criterion for admission and for more details, go through the official site of this university.

Iits all depend on your interest but I suggest you do B.Sc. In maths but there is also a problem that you can't get any college with this percentage in any case if you get the college so don't miss the chance because ITI is a Diploma course and you can do it side by side.

As you said that you have scored 79.11 percentile and you belong to general category, sorry to say but 90.31 percentile is the cut off for JEE Mains, so keep your hopes low.

Kindly visit this link:
https://www.shiksha.com/college/aayojan-school-of-architecture-jaipur-19445/admission

First of all its all depend on you, you have to see your interest. Both the courses are good in their field in graduation you will get the 3 years degree, and in ITI you only get the Diploma because ITI is a Diploma course and graduation is a degree course and degree have more value then the Diploma you can also do Diploma course side by side with your graduation.