Feature image not showing and not saving

Hi,

Thanks for contacting us,

For this you can folloiwng the artilce to add fearured image

https://www.wpbeginner.com/beginners-guide/how-to-add-featured-image-or-post-thumbnails-in-wordpress/

https://docs.themeansar.com/docs/wordpress-2/how-to-set-add-feature-image-on-post/

Any confusion lets know

Thanks

Thank you for the link provided. I have tried all the links, but it still didn’t work. Please, can you have a look.