I have couple of website built using concrete 5.6.2.1 version, SEO issue is that Google doest provide priority to subpages of website. Keyword’s appropriate subpage in website not ranks in first 100 results of Google. In stead of , That keyword rank for homepage.

For example - carmanheating(.)com(.)au is ranking on 13th in Google (AU) for ‘underfloor heating’ keyword but its appropriate page is carmanheating(.)com(.)au/services/hydronic-underfloor-heating/ which is not ranked for above keyword in first 100 results also.

I have tried so much of on-page like interlinking, change Meta tag but not getting result. I am facing this problem only in concrete5 platform.
Please review my site and guide me properly, I am here for only getting solution my SEO issue not for having backlink so I enter bracket between ‘dot’ so please remove 'dot’.