I'd have to wonder about a 2020 with 4 previous owners myself. While some have commented that it's not unusual, I'd say it's certainly not the norm. Without a doubt I'd be willing to bet if you sampled used 2020's on a car lot, MOST of them would have less than 4 previous owners. If I really wanted that vehicle, I'd get a thorough inspection by a mechanic. If it gets the green light then I'd buy it. However, if there was another similar vehicle with only 1 previous owner, I'd go for that one for sure. I think the OP made the right choice.