Learning is the result of expressing your curiosity. I think there is no purpose to learning if you haven’t got curiosity.
Lectures often teach nothing and respond to nothing you are curious about. Maybe you should never have tried there.
Memory techniques are not needed if you aren’t curious about anything. My 8th card this morning was a 6 of spade. The image is a massage. The image is suppose to stimulate my curiosity and perhaps inspire me or make me laugh.
If all you think is about going fast to finish your learning task and think the rote method is the way to go, you may need to be more curious. My best suggestion for you is that you may want to find topics of great interest to you.