Embed a Google My Map
Embed any Google My Map you have created - www.google.com/mymaps
Open Page Settings > Page Type and choose Google My Maps.
- My Maps - choose the My Map you wish to embed. The picker will show all My Maps in your My Drive, Shared with me or in a Team Drive.
Note: If you wish to adjust the map zoom, you can do so in Google My Maps using the “Set Default View” option (click on the three dot icon). Also don' t forget to check the sharing settings of the map you plan to embed, if it's public then make sure the sharing is set to "public on the web" or "anyone with the link"; if it's private then choose either domain sharing or specific people.