Quality Issues - I would like to know why these photos were rejected

I am new to photography and also photoshop/lightroom. My photos have been getting rejected for quality issues. I have uploaded three to this post. As someone who is new but also wanting to learn, can you guys point out the quality issues that Adobe sees in the provided photos? I would like to work towards becoming a better photography and post-prossesor. I am hoping this forum can help. Also, I much appreciate any detail given. Thanks in advance!!