I think you will "pass" your two behind subjects and that will be fine for your scholarship, you do not have to be perfect, just maintain a decent average and you can do that whereas the odds of getting straight A's every semester for four years are not so good :-)

Do the best you can! That's all you can do; take an interest in the subjects you can and try to find a connection to those you don't like so well.

There are lots of scholarships, loans, ways to get through school. I had a good friend who would work a couple semesters then do a semester of school, work a couple, then school; there are a zillion ways to go through school if that is what you want.