Hi, it can certainly be frustrating to not achieve your target score. It is good that your GPA is high as this is often a hurdle that most students deal with. ACT Tutoring and ACT prep courses are certainly a good way to boost your score or identify a weakness to focus on. A good tutor can isolate and strengthen a weak point whether it is the English, math, reading, science or writing section.
My son went from a 26 to a 32 in about 5 sessions/5 weeks with a tutor. Good luck!
Don’t worry about it. I scored a 25 on the pre-ACT and ended up getting a 34 on the actual thing.
How did you study between pre-test an actual test?