how to add meta tags for SEO on each page or URL in angular?

I notice some online shopping website and other website have meta tags for every items that I google. And the meta tags change for every page or url I visit in the web site.

How do I do that in angular? Do I have to add every keyword in the meta tags or can I generate them?

I am still new in angular and I only know that there is only 1 head in an angular app.

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