Reach out to quality websites with a personalized pitch. Ensure the content is tailored specifically for their audience rather than being a generic "product pitch".
Google loves freshness. If you can get a TOP-Link inside an article that shows a recent "Last updated: [Current Date]" timestamp, that link has a temporary authority spike that lasts until the next update cycle.
Pillar pages are the cornerstone of topic clusters. If you secure a link within the first 500 words of a 5,000-word pillar page, you are riding the wave of the entire cluster’s authority.