Canada

No one comes under sds, you should check weather the college is a listed DLI, then there's no other issue.
I have added an additional link . Please check it out
https://www.canada.ca/en/immigration-refugees-citizenship/services/study-canada/study-permit/prepare/designated-learning-institutions-list/ascenda-school-management.html

Yes, there are scholarship programs on offer for international students. But each scholarship has their own eligibility criteria. So depending on where you study and other factors scholarship may vary.

Changing fields when it comes to Canada is a risky affair. You face a high chance of visa rejection. It's better you stick to your own fields.

Yes, the study gap would be a major problem. But, it must be okay, if you did something productive during the gap, eg work. You can give it a try. But, I would suggest you not to keep your hopes up. There's a high chance for visa rejection if you cannot provide proof of activities done during your gap.

Hi, that is dependent on what your profile is like and what course you are looking to make an application for.

Both countries have a set of merits and demerits. It is generally easier to get PR in Canada, but the weather is a bit too harsh. U. S green card is not an easy thing to acquire, but you have better opportunities and reasonably better weather conditions.

A lot of Indian students choose to pursue an Advanced Diploma or Certificate courses upon completion of their 12th. English proficiency tests such as IELTS TOELF or PTE may be required.

BCA in most Canadian universities, you will need the equivalent of 12th grade Canadian math. Since you don't have this, you have a couple of options. You can go to a pathway programme (also called university transfer programme) at a college which will help you enrol in a university after you finish the pathway course as long as you get the required marks. Or you can enrol for an online class 11th and 12th maths course from a Canadian high school. Some universities will also accept SAT academic maths or Andhra Pradesh maths.

B.Sc. Agriculture is a four year degree course after which you would be eligible for Vacancy with Government of India. And companies dealing in Food and Argo Product. There is a very good scope for this degree in current scenario. There are colleges like Lovely professional University, BHU etc. Who have a very good course structure and Placement opportunities for Agriculture students.