I lost my phone and cannot perform 2-step authentications

I not sure is posting my problem here are allowed or not, please delete it if this post have violating some rules.

My old account (i.am.fsdev@gmail.com) have activated 2-step authentications but then I lost my phone and cannot access to my account anymore.

I do not know which email I can send to request help or how to resolve this issue.

Has anyone face this problem before? Thanks in advance for any help you are able to provide.

Also, sorry for my bad English.