People post because they want to vent, to share their frustration, to make others laugh or shake heads. If ppl post to get advice, they usually ask.

So: You want to give advice?

Has the person explicitly asked for it? No? Then don't.

But you really, really want to give advice! Still: no!

But your advice is really relevant! Still: no.

But you also know the person well (you follow them & they you & you interacted): ask if they want advice. If they don't explicitly say yes - it's still a no.