I have a question about an external hard for time machine

Thank you so much. Now a more important question. How do I get rid of all my files and data on the old Mac? I do use iCloud so I’m questing I can just sign out of that, but not sure about my email accounts and other stuff.

Yes, I will get rid of it. Do you recommend transferring data from my old to new Mac or creating a new account. I spoke with Apple Care and they said since I use iCloud for documents and photos all I need do is sign into my iCloud account. Since I do not use Apple Music and all of my music is on my iPhone and iPad I can just connect one of those devices and do a sync and my music will sync. I do have a couple of flash drives that I can connect via a C to USB and copy anything later I see is missing. This seemed like the shorter way, not sure if it’s the most efficient way. There’s less then 50 GB in my iCloud storage.

After dealing with a legacy MacBook Pro for 8 years, I upgraded to the 2020 13” MacBook Pro. It setup in minutes. I spent a few hours downloading apps, etc. Thanks to iCloud my genealogy data was in my documents, all I did was download the software and switch my Malewarebytes license to the new machine. My photos, documents and music were there. All I did was transfer movies via the flash drive. It’s all good and for now, I feel like I made a good decision. I’ll give it a week then format my external hard drives and wipe the old Mac for trade in. Many thanks.