Sort posts by day, week, month, alltime

Hi there!

Hope you can help me out!
I found a topic answering part of my question, although (of course 😀 ) I would like something a bit different (view the code I used below).
I am trying to sort my posts through regular loop and would like to order/ sort my posts by day, week, month, alltime.

It really took me forever to find out what the code below should be implemented in functions.php, therefore I urge you to speak loud, clear en slow for me in PHP terms 😀

Thank you in advance!

Kind regards,

Fluksy

Code:

// Added by HC
add_action( 'pre_get_posts', 'sort_by_filter' );

function mv_main_orderby($orderby) {}
function tr_main_orderby($orderby) {}
function sort_by_filter($query) {
        global $wp_query;
        // IF conditions modified by HC
        if ( !is_admin() && $query->is_main_query() && isset($wp_query->query['orderby']) && $wp_query->query['orderby'] != "rand" ) {
                switch ($wp_query->query['orderby']) {
                        case "popular":
                                add_filter('posts_join', 'wpp_query_join' );
                                add_filter('posts_orderby', 'wpp_query_order_by');
                        break;
                        case "views":
                                add_filter('posts_orderby', 'mv_main_orderby');
                        break;
                        case "rating":
                                add_filter('posts_orderby', 'tr_main_orderby');
                        break;
                }
        }
}

// Added by HC. Did you forget this function? :P
function wpp_query_order_by( $orderby ){
	global $wp_query, $wpdb;
	$valid_order = array('asc', 'desc');

	// Sorting by 'popular', order by pageviews
	if ( isset($wp_query->query['orderby']) && 'popular' == $wp_query->query['orderby'] ) {
		return "{$wpdb->prefix}popularpostsdata.pageviews " . ( ( isset($wp_query->query['order']) && in_array($wp_query->query['order'], $valid_order) ) ? strtoupper($wp_query->query['order']) : "DESC" );
	}

	return $orderby;
}

function wpp_query_join( $join ) {
        global $wp_query, $wpdb;
        // Sorting by 'popular', join the popularpostsdata table into the query
        if ( isset($wp_query->query['orderby']) && 'popular' == $wp_query->query['orderby'] ) {
                $join .= " LEFT JOIN {$wpdb->prefix}popularpostsdata ON " . $wpdb->posts . ".ID = {$wpdb->prefix}popularpostsdata.postid ";
        }
        return $join;
}

https://wordpress.org/plugins/wordpress-popular-posts/