Drink with him if you can, talk less and listen more. If you can't comfort people, try to talk less and spend more time with them.

Sometimes people are in a bad mood. If you can't empathize, you can't. Saying something grandiose will give people the feeling that it is easy to stand and talk.

If he confides that you want to interact with him, it means that you are listening, and it may be better for him to say it.