You can simply look for them through your webmasters tool account.

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This one is good to check out bad links but how to find bad links that is also important. Well Google webmaster tool is best tool to check out bad links & disallow them too but apart Google webmaster tool there are also some online tools.

They can also help you to check bad links.

You can use Disavow Tool to remove bad backlinks.

You can find your bad backlinks by using manual techniques only through webmaster account.

*download all the backlink data from your webmaster
*check all the backlinks and collect the bad backlinks manually
*upload all the bad backlinks data in disavow tool
*Your bad backlinks will disappear after few days.

You can check your backlinks in your Google Search Console or GA account, or go for any other backlink tool to analyze them in-depth. Choosing between specific SEO tools I`d recommend SpyGlass from SEO PowerSuite - it finds the backlinks with its own crawler, but there`s also an integration with GA and GSC at once, and it performs a rather comprehensive analysis of your backlink profile to pinpoint the best links as well as the toxic ones that can be disavowed on the go. Really a great tool to keep your backlink profile all neat.