Once you have your on-page SEO under control, start working on your off-page SEO!
Backlinks are important for improving your traffic and ranking. Try some guest blogging!
Also BloggingX said, "Content marketing and blogging are all about demand and supply game. If you manage to create content for which there’s massive demand, you get traffic even if your blog posts have no backlinks to them."
Do brand monitoring as well. This can help you build backlinks because you can reach out when other sites mention you but don't include a link. See what people are saying and engage online to build your presence!