I can think of only one approach to this difficult situation:

(1) If you are living away from home, move back home, and enroll at some college (a community college perhaps) so you can save money on room and board, and on tuition.

(2) While you are getting caught up in math, chemistry, etc., to where you should be at this stage, only take one or two classes, and work part-time. This will give you more time to really study algebra, chemistry, etc., whatever it is you need to work on. I don't think a tutor is what you need. Besides, they are so expensive. The libraries and bookstores are full of workbooks to make it easier to learn algebra, chemistry, etc. Get those. Use those. I assume you could find web sites that do the same thing for you, easier free ones or low cost ones. Going to college only part-time, and moving back home (if you are living away) will be embarrassing socially speaking. But it will prevent something that will be even more embarrassing: flunking out of college altogether. So, my basic recommendation is for you to slow down until you get caught up. But if you slow down, you will really have to resist the temptation to goof off. You must be disciplined. Otherwise, right here in the young days of your life you are going to screw up your life for the rest of your life. These days are crucial. What you do, or don't do, now, in these days, really determines the course and quality of your life. Well, you know that. But I'm just reminding you. You won't really get another chance to fix your life.

(3) I do believe you should remain in some sort of science or engineering field, since people in the easier college majors will never find jobs, and that will be the ultimate embarrassment.