How not display particular post?

This has worked for me. Can you try it and replace the excluded ID by the id of post you want to exclude.

add_filter( 'pre_get_posts', 'exclude_specific_post_id' );
function exclude_specific_post_id( $query ) {

    if ( $query->is_main_query() ) {
        $query->set( 'post__not_in', array( 'YOUR_EXCLUDED_POST_ID_HERE' ) );
    }
}

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