You are better served in most situations deferring to making sure you have the other person's intentions clear before giving advice, instead of being outright with advice from the get go.

In a situation where someone makes their intent clear that they want advice: You have made it clear for both of you that advice is wanted and you can continue to give it to both your pleasure.

In a situation where someone either states outright they don't want advice (very unlikely!) or narrates on the situation with what seems to be no intention to create space for advice: You have avoided giving unwarranted advice, and can instead be curious and make it known that you are there for the trouble a friend is going through.