Just look at and put expert comments.

Can you see any concept in this clip?
You see things; and you say, 'Why?' But I dream things that never were; and I say, 'Why not?https://www.pond5.com/de/stock-footage/445748

If I didn't read the description I would have had no idea what it was.

why should i describe when i asked for different look. just see as a buyer and put comments. question is; this clip is usefull for someone or not ? If yes ,where can you use it?

same question for this one .
https://www.pond5.com/de/stock-footage/456292

To be honest I am not sure where you would use the fireballs... You might want to add an alpha matte with it so the user can easily lay it over another video.
The 100 bill dancing isn't too bad, but the reflection is way too far back.. it is very distracting, unless you move it forward and make it more visible. Maybe change the background to a blue sky or something to make the money look as if it were flying.

I firmly agree with you, thanks for suggestion as i am new in this field and learning day by day .i always need guidance of professionals as you.
thanks again.

My take on things is anything goes. I stopped second guessing things when some of the weirdest stuff has sold that I never thought would. For example; this in my thoughts was just dead sea salt crystals (macro) - I never thought it could be used for presenting crystal meth...

https://www.pond5.com/de/stock-footage/292744

One never knows how or when something is used... So I stopped pondering and just create.