Best approach to get your site indexed?

first rule out that you're blocking it yourself: no noindex tag, nothing disallowed in robots.txt, and on wordpress make sure the 'discourage search engines' box isn't ticked. that box catches loads of people after launch. then sitemap in search console, url inspection and request indexing on the key pages, and link to new pages from pages that are already indexed. if search console says crawled - currently not indexed, google has seen it and decided it isn't worth it yet. that's a content problem, not a submission one.