How to say a specific link is bad or good?

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Link building is the process of acquiring hyperlinks from other websites to your own website. Search engines use links to crawl the website. Link is very important for the website search performance. A good link increases your search performance. On the other hand, bad link also decrease search performance.

You can use tools like "Ubersuggest" to identify the good or bad links. Showing some traits in the following What Makes a Link Good?
1. Links from websites with high page ranks
2. Links from websites with good Alexa rankings
3. Links from the website that already rank in the top search results
4. Anchor text links to your website that uses your keywords as the link text

What Makes a Link Bad?
1. Link directories with no useful content
2. Sites associated with spam or unethical practices
3. Links from your website to completely irrelevant websites
4. Using too many links in your content
5. Broken links
6. Purchased, solicited, or unnatural links