New iCloud Account Redirects to Random Account on Apple Login

I recently created a new iCloud account, but when I try to log in using "Sign in with Apple," it keeps redirecting me to a random account. I just purchased this phone yesterday, and this issue happens even when I attempt a guest login—it still redirects to an unfamiliar account. I’m concerned that either there’s a problem with the device I was sold, or PUBG Mobile was previously downloaded and used on this phone. I expect a prompt response to resolve this issue. Apple, please address this matter urgently as I need assurance that my device and account are secure and working correctly.