Well, i for one also think that Ronaldo has been constantly disrespected by Manchester United and Erik Ten Hag, but the team is always bigger than a single player, and despite the fact that Ronaldo is one of the greatest player's of all time, he still has to respect the club in all ways possible. Shortly after his suspension from the team, Ronaldo has issued an official statement/apology to the club, and from his words i think he is really sorry for his actions and the club should forgive him and the two parties should work together and show each other more respect going forward, at least before he maybe leaves in January.
As others have already mentioned, i doubt that the apology of Ronaldo was an honest and serious apology. It think it was just a post that was made by one of his managers and sounds more like a copy/paste standard apology than a real one. Also i agree that Cristiano Ronaldo definitely can have the feeling that he is not treated with the respect that he deserves. When he joined ManU again 2 years ago he was the big savior for everyone but sadly it turned out not that way so far.
Before this season he desperately wanted to leave the club but it just did not work out and now he is stuck here even though he does not want to be here. It's an unfortunate situation for everyone.