Your photography looks more like snapshots rather than stock photos. Go back and check out your favorite photographers. Try to copy how they approach stock photography. That's how you will improve.
don't agree, I do like a lot some of your pictures, they might not be pure stock but they aren't snapshoots for sure, you know how to compose and making the picture interesting, I would say browse pictures in agencies and see what sells more, if you don't wanna shoot the regular stuff keep doing what you are doing, you will understand what will sell more or less in the future, best of luck