Where is the best place to exchange coins for cash?

Can you elaborate on the best place to exchange coins for cash? Are there specific factors to consider when making this decision, such as fees, security, and convenience? Are there any online or offline options that stand out as particularly advantageous? Additionally, is there a difference in the best place to exchange depending on the type of coin being exchanged, or is there a universal solution? Finally, are there any potential risks or scams to be aware of when exchanging coins for cash?