Hello @prinya-c,

If you want to display the posts of same category in one page then there is category archive page where all the post of same category will be listed.

For this create the category by going to Admin panel > Posts> Categories and then create the posts by going to Admin Panel > Posts > Add New and assign those posts to that category.

Finally create the menu including that category and assign it to primary location. In this way you will have the page that displays the posts of same category.

https://image.prntscr.com/image/VAwzRy8eSJSM55PkObjWFQ.png

Hope this helps.

Best Regards!!