Google Shopping requires you to set up something called a Merchant Center account and upload your product information there. If you haven't done this step, your products won't show up no matter how good your website is. You also need to make sure your product pages have clear titles, descriptions, prices, and images because Google uses this information to display your items. Sometimes stores get disapproved if their shipping information is confusing or if the prices on the website don't match what you entered in Merchant Center. Another common issue is not having proper policies like returns and refunds clearly written on your site. Check if you received any emails from Google explaining why your products were rejected. What do you think might be missing from your setup?