Website loads slowly?

The speed of a site depends on so many factors ( your server, the size of the image you use, minify js, css, merge css, js,..... ), now, it take a lot of time to waiting for the response from your server. So please check and optimize your site, checking speed of a site is beyond our support. 

But there are still some options for you to refer

https://www.mageplaza.com/kb/how-to-enable-merge-css-javascript-magento-2.html

Or

Thanks for your understanding