This is your site with Blocksy them free: https://www.limousines-europe.com/ ?/
The website you check has no images, no sliders, custom css, js so it will definitely be very fast.
With Freshio theme, you have to display images, sliders, load css, js for customizations, of course the speed will not be fast. You can also check the actual speed on our demo website.
To optimize the speed of your website, you need to have many factors such as server, CDN, image optimization … So if you want to optimize the best speed for your website, you should look for website optimization service for more advice