I am trying to verify my gmail and it won’t verify begat should I do

You may not be providing the correct mail ID and password for the iOS mail app to verify.

If you have two-step verification enabled on Gmail then please generate an App-specific password. --> Sign in using app passwords - Gmail Help - Google Support

Drewdrew1234 Said:

"My phone won’t verify the Gmail what should I do"

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Use a New App Password:

Do you use an App Password? If so, try a new App Password. Sometimes, changes (i.e. updates) are made to the iPhone, and then mail server syncing becomes an issue (which is what a new App Password it intended to fix).

For gmail, Get it here:

Sign in with App Passwords - Google Account Help - Google