I think this depends on region, and the type of phone. I am in Canada and have never seen ads or bloatware on Samsung phones. I currently use a Galaxy Z Fold 3

I think this depends on region, and the type of phone. I am in Canada and have never seen ads or bloatware on Samsung phones. I currently use a Galaxy Z Fold 3 connected to a lapdock via USB-C video out. DeX is a very nice desktop environment for the phone.