Website Slow loading

Hello, I need help to improve the loading of my website. My TTFB is too long. I’m using the plugin wp-Optimize to improve speed. The response of my server still slow. Can you help me with this please?

The website is [ redundant link removed ]

• This topic was modified 13 hours, 47 minutes ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Everything else WordPress topic

The page I need help with: [log in to see the link]