Blocked iCloud from previous owner on new iPhone
Hello, I bought a phone from someone, the content and settings were erased, but the phone did not reset to factory settings. I tried to reset it through iTunes, it reset, but when I tried to log in to iCloud, the iPhone was locked, asking to log in to the previous owner's iCloud. I called the previous owner, entered his data, but nothing changed, I still can't use it. I asked him to go to the settings from his other personal phone and remove my iPhone from the devices, but he said that my iPhone was not there. This previous owner also bought this iPhone from another person, it turns out that I am the third owner. Is it possible that the iPhone was locked by the first owner? The screen shows that the iPhone is locked, I absolutely cannot use it, I cannot go to the settings, etc. What can I do now?
iPhone 14 Pro Max, iOS 18