Increase number of products on base page

Change the number of blog postings via the WP setting page.

??

Here are a couple of functions.php edits that worked for me from James Koster – I made a functions.php and put it in my child theme so as not to edit the main theme.

https://gist.github.com/jameskoster/1601682

// Override theme default specification for product # per row
function loop_columns() {
return 5; // 5 products per row
}

https://gist.github.com/jameskoster/4227162

// Display 24 products per page. Goes in functions.php
add_filter( 'loop_shop_per_page', create_function( '$cols', 'return 24;' ), 20 );

Hi
I need a solution for above topic title.Ex if i have 12 different products of one category say shirts,then n i would like to display say 12 different shirts with 4 shirts in each row with 3 rows in all+pagination wherein i can display my other range of shirts on next page.
More of each display shirt should be attached to cart.
Something like this link below
https://www.yepme.com/Products.aspx?pCatId=173&CID=32&pCatName=New%20Arrivals&pSubName=Shirts

This might work:
https://www.ads-software.com/plugins/woocommerce-customizer/