How do I cash out my crypto account?

Hello there, I'm wondering about something regarding cryptocurrency. I've been investing in various digital currencies and now I'm interested in cashing out my holdings. Could you please walk me through the process of cashing out my crypto account? I'm particularly interested in knowing what steps I need to take, what platforms or services are commonly used for this purpose, and any potential fees or considerations I should be aware of. Thank you in advance for your help!