Science

If you don't want to go for graduation, you can do a 6 month diploma course in aviation or you can directly go for an interview in aviation industries, they provide you training once you get selected.

IISER Provides you a 5 year course along with research program. As you are from biology, you can research on rare diseases and their cures depending on your interest. That will help you to become a scientist. Hope this will help you.

yes. If you are interested in this field then you can do this.
Bsc Animation jobs are plenty
Best of luck. .
Carry on.

Physics is a very tangible subject. You can actually see everything happening around you. When we are not good at something it represents our disinterest in that thing. Try to develop your interest in it by strengthening your concepts. Solve the easy questions first. I recommend you use the book HC Verma. After every chapter it has concept based questions which are the best to test whether you really understood the topic.