Welcome to the forums. Unfortunately you are out of luck. Those are very important security measures to protect your data and your phone, without them you have basically a paperweight in your hands. Sorry.
Factory reset protection, every android has this feature built into it as theft protection. That is unfortunate that this happened. Seems crazy that whoever sold it left their account logged in...
Factory reset protection, every android has this feature built into it as theft protection. That is unfortunate that this happened. Seems crazy that whoever sold it left their account logged in...