I'm struggling to add links from within the content (WP Gutenberg Editor) to categories, in the same way WordPress deals with posts. Using autocomplete, when searching for an internal link, you can easily get to link to other posts, but not to categories. I find it hard to manually type /my-category/ always in the URL section and there's a huge probability one of the links to be broken.
This is especially important for SEO, because category pages should also receive links if you want them to rank.
Can't find a solution, and it seems Google or StackOverflow family of websites don't offer a straight answer.