.htaccess Modification

Hello. I have a site with this structure:

Home
About Us
Products
Product
Services
Contact

If I open
https://mysite.com/products
reads page-products.php
and

https://mysite.com/product
reads page-product.php

I need to use page-product.php as a generic page.
For Example…
https://mysite.com/product/The-Best-Product/32
read page-product.php?name=The-Best-Product&id=32)

And how about

https://mysite.com/john/
and reads page-user.php?username=john

Its possible to make something like that works?
Thanks!