I was going to play at my company christmas party last night. Nothing special. Three songs probably ... A little Nancies, a little Christmas Song, and Sad Caper by Hootie (*throws horns*) ... Anyway the room was like a goddamned black hole. I could barely hear my guitar and when I sang it was like my voice was sucked out of my mouth and disappeared into the ether ne'er to been seen again.
The A/V moofs didn't have a monitor for me so I couldn't use that to hear what I sounded like ... In the end I didn't do it. It would have been my first time in front of people and I wasn't going to play in a situation where I couldn't hear myself.
I hear you man, I hate bad monitors(or even worse, no monitors). Look around your town, I'm sure you can find an open mic or something to get that first live performance under your belt.
Welcome to playing live!! It's different every time.
But once in a while the room sounds great, monitors are just right and everything becomes one. The more you do it, the less you'll be effected when things aren't perfect. And get used to the fact that they never are. It's another part of learning the craft................