Experience does make you a better player. The more real life experience you have doing some thing, the more likely you will be able to know what works and what does not with some particular thing. People with experience also know what not to do and what could be dangerous.
While experience might be a factor in making some people great players, pure skill and ability is also a factor in making someone a good player. If playing a team sport, communication may also be a part of the formula. Yes, practice (experience) certainly helps, but it is not the determining factor in whether someone is great or not.