Calling ten had didn't like him was not a correct statement.
Ten Hag excludes Ronaldo from his plan once Ten Hag came to Man United previously. Do you think it was the indication Ten Hag likes Ronaldo? 
The problem is ronaldo can't adapt with new united. he was not aware if the current united was actually different compared when it was being managed by sir alex ferguson.
Ronaldo adapted well at Man United in his first season previously, he even became the top scorer in Man United. But he played regularly as the starter in the previous season. It is different when Ten Hag became the coach, Ronaldo often became the substitution player. Ronaldo sits on the bench for a longer time right now. So, it is not about Ronaldo's adaptation, but Ronaldo is no longer to be the main striker.It can be seen from what happened with meguire that is rarely playing for MU again.
Don't compare Ronaldo with Maguire, it is a too different case.Maguire is clearly a troubled player, while Ronaldo is a valuable player.