hello

Either get the the person holding the Activation Lock to turn it off, return it and get your money back, or if you have the original receipt from when an Apple Store or Authorized Apple Reseller sold it go to Apple to get it removed.

If you can't do any of those responsibly recycle it.

Hopefully you know the previous owner? 🥴 You will do well to look at this Apple link......

https://support.apple.com/en-us/HT201365

Regards,

Bodycalming.