WIY- this happened to me and I spoke to my Rabbi about it. He told me that no one is human and everyone is going to make mistakes. You can still admire that person for the specific trait that they had that you wanted to emulate, while recognizing that they aren’t perfect. It also comes to show us how important it is to be an individual. Hashem instills within us our own personal Kochos and Tzaros, and we must focus on them. Yes we should have people to look up to, but we cannot make our focus being them! So I’d say if something that person had was inspiring to you, maintain that inspiration, but recognize no one is perfect! and don’t loose hope that people in this world are all bad 🙂
Hatzlacha!!!