This is my best sunset photo. why no acceptance?
Few reasons. To much editing, I can see some grain, the bush in the front could be removed etc. Try, learn, repeat. Use a tripod, everything should be sharp, and learn from Youtube, from Adobe how to edit landscapes.
Also Adobe Stock has no shortage of sunsets with 8+ million results https://stock.adobe.com/search?k=sunset
See Reasons for Content Rejection
This picture is way too saturated. In the sky area noise - artifacts are visible:
The general composition is also not so good - too much sky I think.
However, the first issue is the saturation - It's too much!