Buying a car in the US

[rpm]

Hi everyone.

I'll be moving to PA in a couple of months and would like to get a small car there. Ideally, I would want a 90's Honda Civic or similar.

I've been searching online but got disappointed quickly.
Living in a warm-weathered country never did I know Civics could turn into such rust buckets. Most were badly mistreated too.

Maybe I've just been looking in the wrong place. Do you guys have any advice on the best method to secure a clean used car in the US, what are the best websites, etc?

General tips and things to look out for would be great too!
Thanks! Can't wait to make my way down old Route 66 for example!