Disable Specific Blocks

add_filter( 'allowed_block_types_all', function ( $allowed_block_types, $block_editor_context ) {

	// List here the blocks you want to disallow. https://developer.wordpress.org/block-editor/reference-guides/core-blocks/

	$disallowed_blocks = array(

		'core/navigation',

		'core/query',

	);

	if ( ! is_array( $allowed_block_types ) || empty( $allowed_block_types ) ) {

		$registered_blocks   = WP_Block_Type_Registry::get_instance()->get_all_registered();

		$allowed_block_types = array_keys( $registered_blocks );

	}

	$filtered_blocks = array();

	foreach ( $allowed_block_types as $block ) {

		if ( ! in_array( $block, $disallowed_blocks, true ) ) {

			$filtered_blocks[] = $block;

		}

	}

	return $filtered_blocks;

}, 10, 2 );