How to Check Multiple radio button

Hello Developers, Good day, I would like to add radio button instead of checkbox, and I can only select one radio button for each person. but when I try to add radio button i can only check one button on whole page. How can I do that ? I am using vuejs as javascript framework.

you need to add the name attribute. You need to give a name to each group of radio buttons, so that it is clear how they are grouped

I did but it works on online editor not in my browser. Like codesandbox it is working but when i run it from my local browser it does not works. only one button going to select.

my full vue apps source code here.