Using Google Maps unfortunately requires a credit card, even though you got a generous free tier which you very likely wouldn't exceed.

If you got no credit card, you can look into OpenLayers as an alternative (here's how to render a map with it: https://openlayers.org/en/latest/doc/quickstart.html).

In our concrete example, this would render a map:

Include this in your HTML file: 

In app.ts, use this code: 

You can explore the OpenLayers docs to learn how to render a broad variety of different things.