The performance of the Roma team under Mourinho was not as good as expected. Moreover, Mourinho's relationship with the management was not good. This is why Roma management fired a coach like Mourinho. De Rossi is not experienced enough. But that's not to say Roma won't improve with De Rossi. Maybe the Roma team players will be able to adapt themselves well to De Rossi's match strategy. Every coach has his own unique strategy.
De Rossi might be able to stabilize the team. But the Roma team is not strong enough. Roma management should definitely take necessary measures to strengthen their squad. If the squad is not strong, it is not possible to get consistent good performances from the team.
Roma must thank Mourinho, he has been able to deliver a major title that has never happened before. The Special One was also able to increase the number of spectators at the Olimpico, thereby increasing club traffic again. I think Roma management was wrong to fire him. The transfer of coaching staff to De Rossi also did not improve the Giallorossi's performance, in fact there was only a setback compared to before. I am pessimistic about this team next season and it looks like it will be difficult to compete in the top five.