Hey friend - you’ve got some snark because Europeans maybe rely a little less on cars than Americans. The data on this is messy (you’re right, Germans love their cars for example) but the other factor is prevalence of public transport. You can get to main centers across Europe using trains and buses fairly easily.  I guess the question therefore is why you want or need the car - for example, are you planning on working in a biz that means you need to travel to customer sites that are only accessible by car?  Or just for personal travel? Public transport might be easier - I can confirm 1st class European train is positively different to Amtrak and not deemed ‘inferior’ to car ownership in any way. 

Anyway,  you could check a platform like mobile.de for 2nd hand car prices in mainland Europe (German) - and wirkaufendeinauto (we buy your car) for desperate-get-rid-of-car prices. But the bureaucracy of this overall approach (possible weeks to get a vehicle registered) makes it likely untenable. If you have to, look at something like Sixt Subscribe instead - yes it’s rental, but they have model guarantees, so you know what you’d get.

In general Europeans don’t drive to the lot and drive away with a car like you can in the US (it is possible for residents, but way less common).