>How would you react if somebody tells you to head to a mosque because you are not feeling well?

Personally, I'd thank them for showing a genuine welcoming kindness and sharing something that has made their life much richer.

There are secular and religion-agnostic churches. Unitarian Universalism, for example.

Oh please I am tired of this whole assumptions and tippy tappying around just general things which help.

If there was any sort of better alternatives to a church, I would have recommended that. Sports and board game night don't really cut it. And church = whatever place of worship this person might be interested in.

And if they truly despise the idea, they can simply not apply it. The whole preamble to ask if they are religious and which flavour might that be, before giving a piece of advice is ridiculous.

I know that's hard. But honestly I had fallen into something similar to what OP is saying a long time back and it is a bit of a one step backward first to go forward kind of a thing. Without nourishing the soul genuinely these things can take over your life. Maybe he can volunteer for a short while / after hours.