Regenerate Web API key of Google Firebase

How do I regnerate my Web API key for Google Firebase? I deleted the autogenerated one due to misguided reasons.

If it's not deletable, do I need to create a just a new App or a new Project?

How to change Firebase Web API key?

Go to your API account, select a project at the "Select a project" dropdown in the upper left, and "Create Credentials" of the API Key variety. Firebase will link to your key automatically.

How to create a new API key in Firebase?

Be sure your Firebase project is still selected. Click Create credentials > API key. Take note of the new API key, then click Restrict key. In the API restrictions section, select Restrict key, then add to the list only the Super Service API .

Go to your API account, select a project at the "Select a project" dropdown in the upper left, and "Create Credentials" of the API Key variety.

Firebase will link to your key automatically.