Problems in fixing my site speed and FCP

I don’t see any major problems in the PageSpeed test. The site is pretty well optimised. There is only a slow initial response time. This could be caused by plugins or server components. Therefore, have a look at which plugin could be to blame and whether there are components in the hosting that could be improved – e.g. a newer PHP version.

If you see further potential, take a look at this article on the subject: https://developer.www.ads-software.com/advanced-administration/performance/optimization/