The odds of buying a clean-title car from Copart, while not zero, are very low. Iowa, Nebraska, Oklahoma, and Arkansas are nearby states where you won't need a broker or a license to bid on any car. But beware, there are fees and other considerations associated with winning a bid on a car from Copart.
A few words of encouragement/advice: you're a very young guy, and very young guys aren't too often established financially in this world, yet. You'll find that two things are very at odds with one another, when working in this hobby: money and patience. The more you have of one, the less you need of the other. Keep an eye on ALL sources: IAAI, Copart, FB Marketplace, Craigslist. Maybe start lower, with a base 2.2 Cobalt, and build it up later. These cars are quick, even with a base 2.2.