First of all the unlocker services offered on the internet are a waste of time and money if you actually paid for anything. The results they give are not reliable. If they worked then any thief would use them to gain access to stolen devices, and they don't.
The last screenshot shows a partial email address, you would need to sign into iCloud.com using that email address to remove the device from FindMy. So what is Apple actually showing when you view it on their website.
Remove a device from Find Devices on iCloud.com - Apple Support
Ironically if you had the Password for that account you could also use it on your device to remove the Activation Lock. Where did you remove the phone from Find My?