There are several strategies that can be used to acquire backlinks. One of the most effective ways is through guest blogging, where you write an article for another website and include a link back to your own site. Another strategy is broken link building, where you identify broken links on other websites and offer to replace them with a link to your own site.
Another strategy is link reclamation, which is the process of identifying and asking for backlinks from sites that have linked to your site in the past. It's also worth having a look at your competitors' backlink profile and identifying the sites that are linking to them, then try to get a link from those sites as well.
When building links, it's important to focus on quality over quantity. Search engines favor backlinks from high-authority sites over those from low-quality or spammy sites. Additionally, having a mix of backlinks from different types of sites, such as social media, directories, and industry-specific sites is beneficial for your link profile.