Just shoot a regular pistol IDPA or ISPSC match. You virtually can't be embarrassed at a pistol match. Most people just stand around talking to each other during the hours between their turns. It gets super boring, super fast, watching people shoot the same stage for 1.5 hours at a time.
I went to a match the other day, and there was a guy that I saw there two years ago, every one knew his name and he was definitely a regular. He didn't even finish.
In the nicest way possible, if you become embarrassed at a match, it will be an issue of you being too sensitive, rather than a bad shot.
People have gun malfunctions and have to shot stages over all the time. No one can really even tell if you shot poorly anyway.
Lastly, I know I've told this story too many times before, but in one match, I used an entire mag trying to hit ONE piece of steel. Everyone was nice about it, and it wasn't a big deal.

