Links to your site - search console. unnatural links?
I've looked today at Google Search Console => Search Traffic => Links to Your Site on Google webmaster/tools/ just to check and try to understand things on Google and I found that there are three websites who link the most to my website, total 69 links.
I checked these website but there were no links to my website and I don't understand why there are too many links. I Only visited these sites and offered comments on couple of them.
How can I know if these are unnatural links and what should I do to fix this?