I screwed up!! Advice please?

At least tell everybody here (and anywhere you can) who the seller was so nobody else gets taken!
As for the repair, it is possible to weld in a complete used front frame rail set.
It's not cheap but if the rest of the body is good, it may be worthwhile
I can’t name drop, not yet anyway. At this point, I think he honestly thought that the car was in great shape. And is just clueless with a big wallet. He said he was driving his family around in it recently. I don’t think I drive my enemies around in it!!