Nameable Players is an addon that allows you to do exactly that. Working for 1.16+ simply use an anvil to rename a nametag then use it on your friend. This addon works using the default nametag and is compatible with craftable nametag addons!

Start by renaming your nametag in an anvil

Go up to a player and tap the “name” button on mobile,  Left trigger on controller, or right click on mouse

There’s a lot of fun things you can do with this addon like give your friend no name

You can give your friends super long names

You can even recolor the nametag to have colored names

creator: https://www.youtube.com/channel/UCD1PIgyULARV7ZEYHXwfy1Q?

Downloads

• Behavior .mcpack
• Resource .mcpack (Required)