2011 Lexus RX350 pre-owned certified chassis rust corrosion

Granted, I don’t live in the Rust Belt so maybe my opinion is not correct but that rust looks a bit harsh to me for a 2011 Lexus.
Don’t be surprised if while getting a wheel alignment in the future it runs into additional expense. It could be that suspension components have taken some damage also and I would be totally surprised if those control arm eccentrics on the subframe ever come loose short of cutting them off and replacing them.

Someone made a mistake during detail by missing that insurance card. Usually all traces of prior ownership are removed…

It might not be a bad idea to call the insurance carrier named on that card and see if they will provide some info to you. Maybe they wrote the car off in the not so distant past.