How to convert ergo to bitcoin?

Could you please elaborate on the process of converting Ergo (ERG) to Bitcoin (BTC)? I'm a bit unclear on the steps involved and would appreciate a step-by-step guide. What platform or exchange should I use to execute this conversion? Are there any fees associated with the transaction? Additionally, how long does the process typically take, and what factors influence the conversion rate? Understanding these details will help me make an informed decision regarding my cryptocurrency investments. Thank you for your assistance.