college struggles :(

i have been struggling with college rn. i failed my pervious summer class that i thought i was doing really well in and this next one has so much work i want to just quit and become a tattoo artist. i think i will give college one or two more semesters and then maybe try to find an apprenticeship. im in college for grpahic deisgn rn so the classes aren't even ones i need and its not that im dumb i am just bad at being in a school environment and don't know how to study. any tips?