The FRP lock can be removed using a custom application and a hardware box that was developed for these procedures. You can't remove it while using an app on the Internet if you lack the actual hardware box that will connect to the device's memory area to remove custom strings and files that will disable the FRP locking system.
My advice is to visit a local phone service shop and they should be able to remove the FRP lock for a very small fee.
Warning: If you try to use tools that aren't compatible with your phone, you might break it beyond repair.