Solution - 1

https://gtmetrix.com/reports/secondlinejazzband.com/bREVuFhR/ You have to: 1) surely change your hosting 2) clean your database https://es.wordpress.org/plugins/wp-sweep/ 3) use Autooptimize to reduce the number of requests 4) WPFC is a good option as cache plugin 5) reduce the number of js you are executing In this way you can have it faster but it seems like your design is really heavy.

Solution - 2

The wolf plugins you are using are extremely inefficient and they are loading like worth 700KB of scripts and 300KB of CSS which is way too much for what you seem to be achieving. If you can find a better theme or set of plugins, do that. And use AutoOptimize plugin ( https://wordpress.org/plugins/autoptimize/ ) which will combine all CSS and Javascript requests which helps a lot. And start using Cloudflare. That can help with the load times.

Solution - 3

If you have already tried optimization and everything is fine, maybe if you need to update your server or change it

Solution - 4

I have had a lot of success with WP-Optimize and AutoOptimize I would recommend those. Your server response time might be that's also a major problem slowing down websites, if you could change it to a better hosting service it would help. Wpengine and Kinsta are very good that I would recommend.Both offer CDN with hosting plans you can use their CDNs. If you want exclusive CDNS there are few good ones out there Cloudflare has a great free plan Amazon CloudFront and Microsfot Azure also has CDN You can try any of these suggestions for speeding up your site

Solution - 5

who is the host of your site?