How could i gain more confident when in the front of many people?

Please answer my question because i'm so shy when the front of many people

Listen to your happy music beforehand. Try to get loads of support from friends.
If you have an Iphone, there's an app called Self-Esteem with Hypnosis. Its like meditation along with positive messages sent to your subliminal mind. Works great! They also have an Anxiety one. They're free.

Well thats too bad

Instead of fighting your shiness, use it, if you're shy, and accepting of that insecurity, it's cute, it's endearing, you can actually get a lot done(and get away with a lot) when you use it right, if you're shy and fighting it, you make things awkward, and uncomfortable.(people will literally be seeing you, beat yourself up)

The big mistake people often make is that they think it's all, or nothing, it truly never is, it's always about guiding a situation, if you can look at it that way: 'Things are, what they are', and make the best of it, maybe even have fun with it, you can get much better results.