Post 1 of 2 for critique or insight to why these were rejected: Quality

Post only one or two of your assets. We will check those with great pleasure. Posting all your refusals here will not help you an it will not help others. And ten times noise is easy to detect by yourself. 

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The sunset photos are overexposed highlights.

If you're shooting in a museum or other similar location, you may need a property release. Make sure you get permission for commercial photography before you start shooting.

https://helpx.adobe.com/jp/stock/contributor/help/property-release.html

Several of these images have visible noise which is evident when you zoom in.

I would say focusing issues on the mountain and sunset photos. The one with the waves in particular: the nearest waves should be in sharp focus. The mountains might need some dehazing. The flower photo? Well, it's just a flower. Do a search for the millions and millions of flower photos on Adobe Stock and look at your competition.