If you want to remove dashboard menu items for a specific user-id add this code n the functions.php

function hide_menu(){
 global $current_user;
 $user_id = get_current_user_id();
 // echo "user:".$user_id;   // Use this to find your user id quickly

    if( $user_id == '3'){



        add_action( 'admin_bar_menu', 'remove_wp_logo', 999 );
        function remove_wp_logo( $wp_admin_bar ) {
        $wp_admin_bar->remove_node('updates');
        $wp_admin_bar->remove_node('comments');
        $wp_admin_bar->remove_node('new-content');
        $wp_admin_bar->remove_node('wpforms-overview');

} //hide admin bar
        // To remove the whole Appearance admin menu you would use;
        // To remove the theme editor and theme options submenus from
        // the Appearance admin menu, as well as the main 'Themes'
        // submenu you would use 
        remove_menu_page( 'edit.php?post_type=ocean_portfolio' );
        remove_menu_page( 'update-core.php' );
        remove_menu_page( 'elementor' );
        remove_menu_page( 'wpforms-overview' );
        remove_menu_page( 'oceanwp-panel' );
        remove_menu_page( 'oceanwp-instagram-settings' );
        remove_menu_page( 'library' );
        remove_submenu_page( 'wpcf7', 'wpcf7' );
        remove_submenu_page( 'wpcf7', 'wpcf7-new' );
        remove_submenu_page( 'wpcf7', 'wpcf7-integration' );
        remove_submenu_page( 'edit.php?post_type=elementor_library&tabs_group', 'library' );
        remove_menu_page( 'plugins.php' );
        remove_menu_page( 'options-general.php' );
        remove_menu_page( 'tools.php' );     
        remove_menu_page( 'index.php' );
        remove_submenu_page( 'index.php', 'update-core.php' );
        remove_menu_page( 'themes.php' );
        remove_submenu_page( 'themes.php', 'themes.php' );
        remove_submenu_page( 'themes.php', 'theme-editor.php' );
        remove_submenu_page( 'themes.php', 'theme_options' );
        remove_menu_page( 'users.php' );
        remove_submenu_page( 'users.php', 'user-new.php' );
        remove_submenu_page( 'users.php', 'profile.php' );
        remove_menu_page( 'upload.php' );
        remove_submenu_page( 'upload.php', 'media-new.php' );
        remove_submenu_page( 'upload.php', 'upload.php?page=wp-smush-bulk' );
        remove_menu_page( 'admin.php?page=Wordfence' );
        remove_submenu_page( 'admin.php?page=Wordfence', 'media-new.php' );
        remove_menu_page( 'edit.php?post_type=dt_portfolios' );
        remove_submenu_page( 'edit.php?post_type=dt_portfolios', 'post-new.php?post_type=dt_portfolios' );
        remove_submenu_page( 'edit-tags.php?taxonomy=portfolio_entries', 'edit-tags.php?taxonomy=portfolio_entries&post_type=dt_portfolios' );
        remove_menu_page( 'edit.php' );
        remove_submenu_page( 'edit.php', 'post-new.php' );
        remove_submenu_page( 'edit.php', 'edit-tags.php?taxonomy=category' );
        remove_submenu_page( 'edit.php', 'edit-tags.php?taxonomy=post_tag' );


        // Remove Page menu Items
        remove_menu_page( 'edit.php?post_type=page' );
        remove_submenu_page( 'edit.php?post_type=page', 'post-new.php?post_type=page' );


        // Remove Comments Menu

        remove_menu_page( 'edit-comments.php' );

add_action('admin_head', 'hide_menu', 999);