Not also last season, this has been going on much longer. The last title was Europa League winner in 16/17. After that, we reached the final in 20/21, but lost. So Manchester hasn't won a title in the last 5 years. So it's many seasons that have been bad and they should definitely change something if they want to win titles again. That's why Ronaldo wants to leave, he wants to play Champions League and win titles, with United that probably won't happen.
Last season in 2020/2021 Ronaldo still had a title at Juventus even though it was only the Coppa Italia and this season he didn't get a single title which makes him seem uncomfortable with this.
United still need improvement everywhere which makes it difficult for them if they really want the title and Ronaldo can't wait for that.
With so many teams still interested and with clear targets, Ronaldo will certainly be very interested because even though he is 37, Ronaldo is still very ambitious to achieve many things.