How to not showcase the current blog in the related posts section

Hello @saip1540
First of all need to identify how this section is coming. It seems you are using the Visual Composer page builder for this section. If yes, then you should have some option to not showing the current post in the query.
If this section is not coming from page builder, then need to modify the query.
First get the current post id and then adds the current post’s ID to the post__not_in parameter, which excludes it from the related posts section.
You can find more from here
https://developer.wordpress.org/reference/classes/wp_query/#post-page-parameters