Virtually nothing. Leagues vary greatly in quality of the opponents based on regional areas and the "level" of the league if your area has such a thing.
You shoot WAY too fast. There are fast pro players but those players have fast minds and actually plan out the table very quickly and they are playing precise shape despite the speed with which they play. As said above you shoot with only a general rough "area" of shape and no real plan or analysis of what the shot you are about to shoot is really going to result in. That resulted in a lot of poor shape that caused you to lose games where you "should" have been out.
You have an ok stroke and can spin the ball reasonably well. You would benefit hugely from a dedicated pre-shot routine where you stand back and look at the shot for a few seconds and plan what you actually "need" to do, then step into the shot and shoot it with that plan in mind. Do that not only in competition but in practice because practicing like you are is causing you some serious bad habits that you need to break.
You have a chance to be a lot better than you are now. In Calgary you would be a "also ran" in local tournaments lucky to make the money and in the BCA Nationals Open Singles tournament in Las Vegas you are a good draw for your opponent and would be very hard pressed to win many matches or make the money. The better players in the BCA Nationals Open would torture you, and those are the "Open" players, never mind the masters.
I think you actually have a fairly obvious "feel" for the game and can become "far" better than what you show in that video with a serious effort to slow your game down and become more deliberate and detailed in your shape play.
