My Card in Contacts

I have been having some major issues with straightening out contacts that were once shared through one iCloud account and moving to the family share platform. We finally got some help from a mac specialist to make that happen but now I can't get "My Card" to show up properly on my iPhone. I want to remove the "My Card" setting, fix the info, check on all platforms, and then select "My Card" again. Is there any way to deselect "My Card" option?? Sorry if that is confusing, Family Share is just incredibly difficult to go to after you've been sharing 1 iCloud account for so long! Thanks!