Sancho was always competing with Greenwood for the right side once James left. Ronaldo joining changed nothing in that respect. I could understand if we'd been using Martial more on the left but he's barely played. If anything Sancho has had more opportunities since James went out and Ronaldo came in because Ronaldo plays solely up front where Sancho won't play.
IF Sancho was only ever going to be competition for Greenwood, why buy him? Greenwood looks one hell of a player, as has Sancho in the past for Dortmund to be fair. He's was never needed and then you compound wasting 75 million on him by getting Ronaldo whose an entirely different player to Cavani, zero planning and zero thought has gone into your transfer purchases. Its hilarious as a fan of another team at just how badly your club is run, the whole ethos is of your club is rotten and needs gutting.
Personally I get very similar vibes to mid 90's Liverpool teams, we had some absolutely outstanding individuals but at the core of the squad was a laziness, players thinking they had made it and didn't need to give effort. Except we at least played attractive football.