button which links to random post on site

I'm trying to get a button on my home page that links to a random post on my site, but have no idea how to do it. I've tried to look at a couple other answers... can anyone out there help simplify it for me?

I've tried using this help, but the header code does not seem to affect the button block.

Which exact code did you use? We can tweak it easier

<script>

  $( ( ) => {
  
    /*
    
      begin change button url to random page
      
      Version       : 0.1d0
      
      SS Version    : 7.1
      
      Dependancies  : jQuery
      
      By            : Thomas Creedon < http://www.tomsWeb.consulting/ >
      
      */
      
    // enter button block id without the #
    
    const buttonBlockId = '#block-yui_3_17_2_1_1706584972305_1843 a';
    
    const urlPrefix = '/read-this-trashh';
    
    // do not change anything below, there be the borg here
    
    let r = Math.floor ( Math.random ( ) * 100 );
    
    r = String ( r ).padStart ( 3, '0' );
    
    const url = urlPrefix + r;
    
    $( '#' + buttonBlockId + ' a' ).attr ( 'href', url );
    
    } );
    
    /* end change button url to random page */
    
  </script>

when it worked that code seemed to only drop me at the category page, not a random page within the category (if it was the code that was doing that)

enter list url to this line

 const urlPrefix = '/read-this-trashh';

it should be

 const urlPrefix = '/read-this-trashh, /shop/product2, /shop/product3';

(just an example)