I want to know about registering a photo of a player playing a game.

I can't get a model to sign

By @용덕5FBC

If you take pictures of people, get a model release. If you do not get a model release, forget about it.

As a side note: Stock photography does not allow for sponsor logos!

Hi @용덕5FBC ,

They can only be sold as editorial assets. Adobe has their selected team who provide images for that category. If you want to sell your assets, you'll need to register with other platforms that accepts editorial assets from the entire photographer's community. 

Best wishes

Jacquelin

You can set up an Adobe stock contributor account and sell other types of photography; but you will never get images that include recognizable people accepted unless you have model releases for each person in the image. Under intellectual property laws, you cannot make commercial use of people images without their express, written approval.