What would be the best way? Make my own model environment and wrestling ring in blender? Or Buy some wrestling environments and wrestling rings somewhere? If so where?
Are you familiar with creating games in Unity? Are you familiar with coding in C# ? If not, you might want to wait on developing a certain type of game, and start by learning the basics. This link is a good resource https://unity3d.com/learn
Yes it is possible. No you aren't going to get much help on the forums if you post threads that don't describe your question in the actual title, and include nonsense polls. It is like you're giving the middle finger to the people on the forum, and then expecting help.