This is my first post here, seems like you guys have a great forum going.
I have been bowling my entire life and actually earned enough from scholarships to go to college from it. That being said, I have not bowled very much competitively as an adult & am just getting back into the swing of things. In fact, this summer has been my first exposure to a sport shot, with the main local house holding a shootout on a different pattern each Sunday.
I've found that regardless of what you're doing or what others are doing, sport shorts break down very quickly and force adjustments. It does not matter that some guy has a sanded ball that he wipes after each shot - adjust accordingly. switch to a ball with more
polish and / or less hook, find a new line, take your hand out of the shot, etc., etc.. There are a million different things you can do to adjust, as the others on this forum have suggested.
The one thing you don't want to do, however, is get a sour attitude and let it ruin your day. Once you do that, you lose focus & take away any great chance you had of competing.
Long story short, my best friend as a kid who was a great jr. bowler but had difficulties as an adult also displayed some of the anger characteristics you've mentioned yourself having (both in this thread and others). In fact, his anger problems were so bad that I removed him from my team - my best childhood friend of 15+ years. It taught him a lesson and he cooled it down, and guess what? This past Sunday on the Route 66 pattern, he bowled his first 300 after struggling through portions of the qualifying rounds. In years past, even months ago, his attitude would have ruined him and he'd have been done for.
Blaming others for your bowling will get you nowhere, and is a weakness that will prevent you from reaching the level you'd like to be at.