I re-ran the test so I could see the waterfall… which I see as the best indicator. Sorry, I had to go across the border, but Brazil was logjammed.
The size of the page is 5.5MB in total. That’s never going to be fast. As it’s image heavy, look at extensions to ‘lazy load’ those below the fold to get the page to the viewer faster. Sorry I don’t know Joomla so can’t comment directly on what’s available.
Optimise these images. This will reduce the total download size
You’re running Apache, so enable mod_expires and mod_deflate ( or the 2.4 equivalents of you’re at that ) with a sensible configuration to further decrease download volumes / reduce the amount to download on subsequent visits to the page.
Use a CDN to deliver your static content. That way you’ll be sure to have plenty of bandwidth available to do the important stuff.
TTFB is OK at 0.7s, but not brilliant. It would be good to look at tuning the infrastructure, but at the moment this is not your major concern.
Keep in mind - browsers still load the ENTIRE FULL SIZE of images on browsers no matter how small you make them appear, using code to scale them. Scaling them during render does NOT reduce their file size.
You also return a 404 error where your site’s favicon should be, You need to make one and upload it to the location it’s called for, in the red line on your waterfall.