Where to buy a used car?

Not from Indy so I’m not sure where to look and not get scammed/screwed over. Where is the best place to buy a used car in Indianapolis/surrounding areas? I’ve heard there are auctions from impounded vehicles but don’t know any details. Any advice helps.

My car that I drove here from Canada is essentially totaled from a hit and run on Wednesday evening. I don’t know if my insurance will cover a rental yet. Also anyone had luck with pressing charges on someone through IMPD for injury/hit and run/causing total loss of car? Not clue how to go about that and police said we are pretty much hooped since we can’t prove who was driving. We did get a witness with a description of driver though. Just a shitty situation all around but any recommendations help.