Attract backlinks naturally
Backlinks aren't everything, but they will help you rank higher faster. The more quality links to your site, the higher your domain authority. As Google has shared: “In order to assess trustworthiness and authority on its subject matter, we look for sites that many users seem to value for similar queries. If other prominent websites on the subject link to the page, that’s a good sign that the information is of high quality.” What this basically means is that if a lot of trustworthy sites trust the information on your page, your page is likely to be trustworthy too.
Reach out to relevant and reputable websites about guest blogging opportunities
Get links from companies with whom you have existing relationships
Create content with the "skyscraper" technique: first, find relevant competing content with tons of backlinks; create something even better, and ask those linking to the competing content to link to your piece instead
Publish relevant, valuable, and shareable content that others will link to without you asking
Reach out to websites that have unlinked mentions of your business