Add & attach tags to pages in WP 20-11

HI,
How do I add & attach tags to pages in WP 20-11? I would like to have a field added on each page in the right hand column where I can just type them as the page develops.

I’m a newbee and have searched the Forum and even downloaded something that did not work SO please don’t yell at me.
Happy New Year!
Thanks Wendy