If you want to get data on your backlinks here are a few great tools to use:
(you will really need to upgrade to paid for this to work well enough)
(I haven’t used this as much, but it looks like a very good tool, likely will need the paid version as well)
Google webmaster tools
Search Traffic > Links to your site
You can see the top 1000 linking domains reported by Google, as well as the top 1000 pages on each domain that link to your site. Good for identifying shady or low-quality domains that might be linking to your site.
Be careful with link removal requests or disavowing links, I would only recommend removal request or disavow if the links are on a very bad spam site or very irrelevant pages. Err on the side of not removing links.
If you are looking for some new ideas on building quality links, check out this article I read recently with step by step on how to build good links through author/influencer outreach:
Watch out for link schemes, these are penalizable or de-valued by Google: