Where can I sell new coins?

Hello there, I'm a bit new to the world of cryptocurrency and I've recently acquired some new coins that I'm looking to sell. I'm wondering, where exactly can I go to sell these new coins? Are there any specific platforms or exchanges that cater specifically to the buying and selling of new and upcoming coins? I'd appreciate any advice or recommendations you may have on the most secure and efficient ways to go about this process. Thank you in advance for your help!