Section III of Kant

Kant’s jargon is at the very least difficult to understand. To the best of my knowledge, he begins the third section by introducing the similarities and differences between freedom and will. Once I feel like I have a slight grasp of what Kant is saying he then says something like freedom of will is not sufficient if for which the grounds that they stand on are not sufficient, near the end of 4:447. I slightly understand this, but I feel like with this thought process you can infinitely go on about theoretical situations and then you end up in the same place as you began. I have a good feeling I may never understand Kant’s writing and I have come to terms with that conclusion. I tried my best, thank you.