Hello.
Your website loads 14 css styles and 25 javascripts on every page. Of course it loads slow :-)
I am for sure that 90% of those frameworks code is not in use. Additionally, external images on Pinterest, hosting in Chicago... no more words.
This web site is a terrible Joomla template from all aspects: Design, Navigation, Performance...
I will not take an optimization of it, but I can completely redesign it without Joomla or other CMS.
Just pure HTML/CSS/Javascript, New design, New navigation, SEO ready content. All images on localhost, and I would suggest to migrate to Scandinavian hosting.
Kindly let me know if you are interested. This work would cost around 20 000 SEK and takes 3 weeks for me.