Rather than just bail out of school because you're having a tough time, please go to your college's counseling office and have some long talks with some counselors/academic advisors. Maybe some additional tutoring and/or courses are what you need to feel more knowledgeable and capable academically. You need some professional help, which your college should be more than willing to provide you, to find out the basic reasons why you are struggling. It's smart to realize when we need help and go get it.
You have been a fighter up to this point. Don't give up on yourself. Get the people and the pathway to keep on succeeding. Thanks for writing.