A visibility problem. A rebuild changes nothing.
Open Search Console and look at impressions rather than clicks. If the site is barely being shown for anything beyond your own company name, the problem is not what happens on the page, because almost nobody is reaching the page.
Rebuilding a site nobody finds produces a better site nobody finds. The work here is what the site covers, how it is structured and who links to it. That is search work rather than design work, and it is a different engagement with a different shape and a different cost.
If that is where you land, the honest answer is that this page is not the one you need.