How to make a custom URL on the frontend using the POST slug to load a custom page?

I am wanting to make a plugin that will allow a user to go to a URL like this...

http://www.domain.com/post-title-here/stats

On this stats page is where I will have my plugin output stats data related to the post/page that it is associated with.

I need help with setting up the URL and the page to be shown at that URL. Any ideas?

One thing I saw that is close to what I want is Custom Endpoints however they seem to add

permalink/my-endpoint/endpoint-value/ where I would really need it to instead be like permalink/my-endpoint/ more specificially /page-name-slug/stats/