Hi, I'm a high school level player that has never gotten tennis lessons or played in clubs. I developed my strokes by looking at internet tips and I have a pretty solid WW forehand and backhand and have a slice deuce serve and topspin 2nd serve. So at first sight I look like a very good player but i am terrible when it comes to the actual game. I just almost zone out in important moments and either get lobbed when i'm at net or am a step late getting to shots. Any suggestions? Is it just lack of experience?