Help Me Escape Godaddy Please

For 20 years I have had a website hosted through Godaddy. The domain the site is on is registered with them, and the hosting plan came with their formerly free email which is now one I pay for since they moved them all over to their Frankenstein Outlook/Godaddy hybrid thing. They recently started charging me for a 2d hosting plan I never ordered, totally unnecessary since I already had one. They charged my card for $800. for this. I caught it the next day and they gave me a "refund" in the form of credit- with them. My site is one I never update anymore and I want to shut it down. I want to keep my email and the domain. How and in what order do I handle this to:

1. Cancel the hosting and the site;

2. Keep the domain functional;

3. Move my email out of their hybrid system to another service (I just opened a Fastmail account I would like to use for this email account).

My main concern is that if I cancel the hosting, the email will also be cut off and the domain parked or shut down.

I should also transfer the domain away from Godaddy but since it is tied up with the hosting I don't know if that's possible.

I am happy to hire someone in IT to handle this if anyone can refer one they trust as I am a tech novice and very intimidated by this. Thank you for any guidance anyone can provide.