Hi. Coming across this problem it means you tried to hard reset the device so now it is asking for the previous used google account. We are going to help you bypass that lock using some tool. We hope the phone is not a stolen phone because we don't give these instructions to encourage thieves to steal phones hoping we will provide them with unlocking instructions. We hope you are the real owner of the phone and you just forgot your google account login, or you bought the phone from someone who forgot google account logins.
So far there is no any other way of bypassing the google frp without using a computer, there are many instructions given by YouTube videos or other websites on how to bypass the google account verification without a computer but they do not work. So to bypass the google account verification you will need a computer that you are going those to download the required files so you can load them into your phone. You will need a USB cable, the USB cable is used to connect your phone to the computer. Make sure you use a USB cable not a charging cable because your computer won't detect your phone when you use a charging cable.
You will need to download few files to your computer, download the firmware here. Download only the google acc reset tool from the email that will be sent to you. Download the sp flash tool here, you will need this flash tool to flash your phone. Now download the vcom drivers and follow the installation instructions given here. Without installing these drivers your computer will not be able to identify your phone when you connect it.
Now that you have the required files and tools, extract all the files that you downloaded out of the zip files. Open the extracted sp flash tool folder and run the file named "flash_tool". Now click "scatter-loading" button on the flash tool that you just run. Navigat to the google acc reset tool and select the file named "MT....." and click open. Now click format on the top left of the flash tool. Click manual format. Open the file name instructions not the google acc reset tool folder with a wordpad and copy the code given and paste them accordingly on your sp flash tool. Delete the ones you found on the sp flash tool.
Now make sure your phone is completely off, click the start button on the flash tool and connect your phone to your computer using USB cable. Wait for the big green tick. When you see the tick, remove the phone and switch it on. Comment below if you need more assistance.