I tested with so many plugins like Pages with category and tag with my latest wordpress with php8.1 and also tested with default theme with only this plugin , but in front url is not showing page with category. If I put self category name in url like https:www.example.com/categoryname/page.html , getting page not found.

Admin is showing perfectly.
I tested in permalinks setting also like /%category%/%postname%/

Can any one please help me to assign category, tags to page in front url.