I think you have a technical problem with your camera/lens or, if you have manually focused, you do not set the correct focus point. If you look at the pictures in 100% view you can see that they are all not really focused sharply.
I can agree with the reviewers - for Adobe Stock they are all not sharp enough.
You say you used a 10mm lens, so, even though they have a greater DOF than say a 50mm lens, you can still not have everything sharp at a wider aperture. Il looks like to me in these shots, you have DOF issues, the subject itself isn't even sharp.
For example, in the shot of the clock tower, the clock isn't sharp! It should be!
I've zoomed the clock in at 100% and cropped it to show you what I mean, and what the reviewers would be looking for.
As another example of the train: The engine isn't sharp.
You need to have a smaller aperture for these kinds of shots -f8. For these shots I hazard a guess that you used 5.6 or below.
Exposure is also an issue in the train shot, the steam is over exposed - your whites are blown out as well as the snow!
Also bear in mind, you might have IP rights some of these - train, barn for example.
I don't think it's a DOF problem, because he photographed with an aperture of 8 and 10 and still nothing is really sharp in the pictures.
yup, they are all out of focus, or let it say this way - they are not sharp enough.
I do not want to discuss the lenses you used as a choice but you have to check it in a service shop