I'm not sure exactly where to make these changes in the code I'm not that experienced in these matters unfortunately 

         I got this information from using seo optimiser page audit   H1 Header Tag UsageYour page has a H1 Tag.Tag ValueH1 Bijoux de luxeBijoux de luxe Notice how this above is duplicated it should not be like this Also this below  Title TagYou have...

This experiment adds a defer attribute to render-blocking scripts, causing the browser to fetch them in parallel while showing the page. Deferred scripts still execute in the order they are defined in source.  Example implementation: <script src="/cd...