Please explain as simple as you can, since Heroku has its own domain. I need xxxx.ga as name of my domain connected to mlab. How can I achieve this? Free hosting like hostfree.pw don't work I understand as it doesn't provide us with access to shell command.
Assuming your application is already deployed on Heroku,
the following documentation can be used to register a custom domain and direct it to the same app deployed on heroku.
Also, you can try another hosting platform similar to Heroku- Digital Ocean