You really need to learn to build. My son spent quite some time on the build training games to practice. It makes it worth the effort when you can instinctively build out of trouble. In a close scrap with someone who seems a better close fighter he builds to gain distance and advantage then gets the head shot in before the guy finishes taking his quick build down to reach him. It's one of the skills you can practice in but worth the effort. My son keeps getting crown wins doing stuff like that. Mind you, it helps that he sees stuff happening like before anyone else. He's wired up to go fast I reckon! I love watching him play, it's amazing to see. Proud wannabe gamer dad living vicariously through his gamer son!
I've been playing for about 2 1/2 years, until No Build came in I obviously played Build (without building for me!) Funny thing is I got considerably more wins in Build than No Build. The game does change rapidly though and I may be crap at building, I'm much better at combat.