Joao Felix couldn't do anything when he was returned by Chelsea, in fact his arrival was not well received by Atletico Madrid so that he will be a loan player again at another club next season. In fact, Joao Felix's fate was not so fortunate that for 2 consecutive seasons he had to be at a club whose status was not fixed, only on loan. I know Joao Felix is doing his best but his current condition and high wages make it difficult for other clubs to borrow or make him a permanent player.
He can not blame it on the Atletico Madrid as he is responsible for his performance and contributions for the club in the last few years. A Madrid did expected too much on Joao Felix by spending big money to buy him but so far, he has brought a lot of disappointment to A Madrid. The loan to Chelsea since the last winter did not help Felix to revive his career and again he can not blame it on Chelsea.
With his performance in recent seasons, it's hard to expect that he will suddenly play outstandingly in a new season. A Madrid successfully grew up many attacking players in the last twenty years like Diego Forlan, Kun Aguero, Diego Costa, Radamel Falcao and used some old players very well like David Villa and Luiz Suarez. How they failed with Joao Felix after a big transfer for him is a myth.