cyberphonics

Hi there. I'm new on here and with FL studio and I need help on a few things, but I'll start with one question lol Hopefully, I didn't miss the answer to this on here. I'm trying to record vocals with my mic into FL (common). My question is how to change the input volume, because when I record it, even if I sing loudly, the audio clip it produces sounds like a faint whisper compared to the rest of the channels already in the project. How do I fix this? Thanks so much!!!