Hello,
The photo of the candles - composition and focus. Even though you did this on purpose (?), it doesn't work; the composition is bad!
Beach photo, sorry, bad composition as well, too much contrast - the light is too strong.
From a commercial aspect, these images can't be used!
It will be a really good idea to read the Adobe Stock quick start guide!
https://helpx.adobe.com/stock/contributor/user-guide.html
Lots of useful tips and links to follow!😁