If you expect to place when you compete or even come close to being competent, you need professional training. Hate to burst the male ego bubble, but no one is natural born shooter(lover or driver for that matter). Some people learn faster than others or have a natural talent for shooting. However, your natural ability will soon reach its limit and you will require professional training. Being one of those who was naturally a decent shot, I can assure you that training will improve your skills dramatically. I thought I knew how to shoot, then I took some training. The reality is you don't know what you don't know. Videos and text discussions are not training. Until you learn what to do and how to do it properly, you can't self critique.
Here's my litmus test for "shooters". If they can't explain and demonstrate what reset is, they need training. If they can't explain offset and how to compensate, they need training. If they can't explain the difference between sight alignment and sight picture, they need training. When it comes to rifles its a similar set of questions. What is MOA, what is your max PBR, what is your max ordinate with your current zero? If you can't answer those questions, you need training and a lot more trigger time. Additionally, if you look at your rifle to operate the safety/selector, you need training. Same deal for holsters.
Why more people don't seek training is beyond me. Yes it isn't cheap, but its a wicked fun time and you improve your skills, what's not to like?
TDC