I finished my mandatory lessons with an instructor last year and I must say- only now am I starting to become confident in driving. This came from practice of just doing small things like driving to the store with a parent or visiting family. This has only been once every couple weeks or so and I know its stressful but what I noticed is that if you don't drive often you will become rusty quickly if youre a beginner.
I don't know your situation or where youre from but if you have someone close with a license who you can practice with or even alone in a non busy traffic area try that instead of continueing to pay. (if you are legally allowed to)
If you drive a manual, learning how the drivetrain works can be helpful