google domain verification questions

Hi,

I'm about to publish my first app that needs to use an API from google, so, as I've understood, I have to verify my domain to lift some API restrictions... right?

I've never had a domain or a website. Also, I've read that, after the registration, Google will evaluate the domain in order to unlock the API... so, I understand that the verification is not a sure thing after having my domain/site.... am I right?

Well then; I'd like to ask for your advice and experience. Having a website is the only way to unlock the credential to use the API? Do you have a recommendation about what hosting/plan could I use for this?

Thank you very much!

if you need a domain/link/website you could use
https://sites.google.com/ https://www.google.com/business/how-it-works/website/

Thank you very much for your answer!
I've already created a site with the google tool (something like https://sites.google.com/view/Mysite), and now I've also created a site, from your link, https://mysite.business.site/... but I have the same problem. The verification process requires to upload a file to my website, and it seems that files can't be uploadad there (or I can't find how to do it)

Thank you very much!