Evaluating the quality of a backlink isn't just about looking at the domain authority number a tool shows you, that's an indicator, but not the whole story, a link from a site with high domain authority but nothing related to your niche can be worth less than a link from a small but highly relevant blog, google understands context these days, so the first thing it would look at is whether the linking site talks about similar topics to yours.
The second, and very important, factor is the link's placement within the page, it's not the same if your link is in the main article content, surrounded by relevant text, as it is if it's in the footer, a sidebar, or a generic friends list, editorial links those the author included because they genuinely found your resource useful carry the most weight, if the site has a lot of links pointing to obscure pages or if the entire article seems written solely to include links, be suspicious.
And finally, look at the site's actual traffic and user behavior, a website can have good authority but be practically dead in terms of traffic, use tools like similarweb or check its social media to see if there are real people interacting, a link from a page that receives a hundred visits a month, but whose visitors are precisely your target audience, can be much more valuable than a link from a huge portal where your link gets lost among a hundred others, backlink quality is measured more by relevance and context than by a magic number.