My images got rejected and I need some advice!

33: the trees are a bit strange:

In addition to the sharpness this one has unidentifiable objects:

These are nice, and I assume these are the original sizes as submitted for review. If so, I've always found that an image should still retain a reasonable if borderline degree of sharpness when viewed at 200%. These appear very soft and cross that line to a greater degree than what the moderator might have found acceptable. What upscaler did you use?

most are too dark and not very sharp.