From what you describe, you will need to undertake the Gmail Account Recovery ("AR") procedure, the bext link: https://accounts.google.com/signin/recovery provides the only way to recover a Gmail/Google account.
Tips to complete account recovery steps
If you can't sign in, follow these steps to increase your chances of getting back into your Google Account:
Go to the Account recovery page.
As you complete the steps, use as many of the tips below as you can. (You might not see all the questions described here.)
If you already tried to recover your account and got a "Google couldn't verify this account belongs to you" message, you can try again.
Answer as many questions as possible
Try not to skip questions. If you're unsure of an answer, take your best guess rather than moving on to another question.
Use a familiar device & location
- Use a computer, phone, or tablet where you frequently sign in
Use the same browser (like Chrome or Safari) that you usually do
Be in a location where you usually sign in, like at home or at work
Be exact with passwords & answers to security questions
Details matter, so avoid typos and pay attention to uppercase and lowercase letters.
If you're asked for the last password ***** remember, enter the most recent one you recall.
If you don't remember your last password: ********** a previous one that you do remember. The more recent it was, the better.
If you can't confidently recall any previous passwords: Take your best guess.
Answers to security questions
If you're asked a security question and you:
Don't remember the answer: Take your best guess.
Know the answer but didn't recover your account on your first try: Consider a different variation of the answer. For example, try "NY" instead of "New York" or "Phil" instead of "Philip."
Enter an email connected to your account
If you're asked to enter an email address you can check now, enter one that you've added to your account. Here are some examples:
A recovery email address helps you get back in and is where we send you security notifications.
An alternate email address is one you can use to sign in.
A contact email address is where you get information about most Google services you use.
Add helpful details
If you're asked why you can't access your account, include helpful details.
Some examples are:
You get a specific error message.
You think your account was compromised because of malware or another reason.
You changed your password ***** week and can't remember it.
- If your description matches the information we have, this similarity can help your case.