You already have some content, which is a great starting point. What you will want to do now is to keep posting regularly and without a dip in quality, while taking other steps to draw in traffic and rank up.
I can’t make assumptions on how much you already know about SEO from your post, so I will just say that there are plenty of great guides here. Just use the search function, explore a bit, and you will eventually find the SEO guide that you need.
Also, you will want some high-quality backlinks for your site. You can either get them organically (the slow way) or by buying some (the quick but potentially risky way). You can get organic backlinks by making guest posts and reaching out to authority sites. That is a slow and arduous process, but many can make it work. If you don’t feel like going through all that, however, you can navigate over to the marketplace and find a lot of backlink sellers. Just don’t forget to check someone’s reputation before buying anything from them. Getting scammed is never a pleasant experience.