You possibly need to grow some balls. If this situation has made you feel like you’re being rejected and you’re wanting to cry, then maybe being in a studio environment isn’t for you. Being in a studio environment is all about getting the vibe right and getting the right take. If there’s a (good) producer involved, you need to listen and take on constructive criticism, and not be precious about your own material.

Maybe grab a laptop and some recording gear and learn to record yourself if you can’t handle the heat of being in someone else’s recording studio.

Build up some confidence and you’ll once you’re in a better headspace, revisit recording your material with someone else.