My grades last semester weren't bad. Could of been better

Thats a 3.0, 4.0, 2.0, and a 4.0
I had to drop calc cause I never got a tutor, and my government grade is stuff :c. I failed the first and third test in that class but got a high 90 on the second and final.
Overall my gpa is a 3.25, I'm hoping I can get at least a 3.5 this semester.
Did you start studying? I never had to study in highschool but when I started in college it was so satisfying to see my work paying off with good test scores.