What's your process for finding internal links in a website?

Two different jobs, so two tools. To see what links exist already: Search Console > Links > Internal links shows your most-linked pages, and a Screaming Frog crawl gives you the inlinks for any URL plus pages with almost none. To find spots for new links: search site: plus your domain, then "topic phrase" in quotes. Every page that comes back mentions the topic and is a candidate to link from. Add the link inside a sentence that's already there instead of tacking a "read more" line on the end.