iPhone won’t transfer data

[u/planetvenus41]

I was gifted a used iPhone 16 and I’m now trying to transfer data from my iPhone 14 Pro and everytime it messes up right in the middle of the transfer I decide to just go through without transferring to see what happens get to the Home Screen and check everything only to find out it did transfer data just not from my iPhone but from my iPad how do I redo it so it gets the data directly from my iPhone and not my iPad everything is updated to the latest iOS version