Hi sondo4402,
Thanks for reaching out through Apple Support Communities for help with changing the Apple ID on your iPhone. We're certainly glad to help in any way we can.
If the Apple ID you'll be switching to is not associated with your Family Sharing group, the devices from other family members will no longer be shown in the Find My app in the Devices section.
You can still share your location with those family members and request that they share theirs with you, along with anyone else using an Apple device that supports Find My. Here's a great resource with more information:
Find friends and share your location with Find My
Before changing your Apple ID, we recommend reading through the recommendations in our support guide here:
Sign out of iCloud on your iPhone, iPad, iPod touch, Apple TV, or Mac
We're here for you if you've got any questions.
Have a great day!