If your site has thirty pages, you do not need a link graph analysis. You need to make sure every page is reachable, that links describe their destination, and that your most important pages are linked from the most places.
Give every theme a hub
Pick the two or three things you want to be found for and give each one a hub page that links out to its supporting pages — service detail, relevant work, relevant articles. Supporting pages link back to the hub.
This is enough structure for a small site. It tells search engines which page is the canonical answer for a topic, and it gives visitors an obvious way to go deeper.
Write anchor text that would make sense on its own
"Learn more" and "click here" describe nothing, to search engines or to anyone using a screen reader's link list. Link the words that name the destination: "our approach to WordPress development" rather than "read more".
Find your orphans
An orphan page is one nothing links to. It usually happens after a redesign, when a page survives but its entry point does not. Crawl your own site with any free crawler and compare the result to your sitemap — the difference is your orphan list.
Link when it helps the reader, not to hit a quota
Three genuinely useful links in an article beat fifteen inserted mechanically. The test is simple: would a reader who followed this link be glad they did? If not, it is noise, and it dilutes the links that matter.
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