I’m sorry to hear you're having trouble with your Google account. I know that can be frustrating. Hopefully, we can get this resolved quickly.
Please be aware that Google takes account privacy AND security very seriously. It will only return the account back after the original owner provides enough accurate information to prove such. To recover your account you will need to use the Account Recovery Form.
Read over this form carefully. Do your best to provide the most accurate answers as possible. This will be the only way to prove the account is yours.
Account recovery tips:
Make sure to complete the form from a device you have regularly used in the past - such as your mobile phone or laptop.
Make sure to complete the form from previously used physical location/IP address - such as your house or work location.
Try your best to answer as many possible answers correctly. It's ok if you miss one.
If you're unsure about some answer or specific dates, don't be worried - just give it your best guess.
Attempting the form multiple times, will result in your account being blocked.
Let's begin! You can reset the password from https://accounts.google.com/signin/recovery
If you no longer have access to your phone number set on the account to recover it, you can click on "Try another way". This will prompt for additional options such as:
1) the last password used,
2) phone number (current or previous),
3) security question,
4) Verification code by email
5) another email used in the past.
Remember to use a device and the browser you used in the past to access Gmail so will be easier to reset your password.
Thank you very much for your time & patience while I typed up your response. Also, thank you for giving me the chance to help out today.
If there is anything else that I can help with today, please let me know. My goal is to provide excellent service to you!
(Your friendly expert)