It's barely about your intentions because a person would barely think about what your intention was if they had to suffer because of what you have suggested to them, so if a person suggests an investment to a friend with good intentions but the investment doesn't work out for the friend and he loses money, he would blame the friend for his suggestion and wouldn't say that it is okay, at least your intention wasn't bad. These things barely happen.
This is why I, personally, stay away from such things because I know how embarrassing it can become for me to face that friend if he loses money because of my suggestion even if he doesn't say anything. It is better that I leave him with what he is doing and do what I'm doing and stay away from such stress.
I completely agree with this perspective. When someone advice or suggestion causes harm or financial loss their good intentions are mostly forgotten. Person who suffered loss is more likely to focus on negative outcome than intention behind advice. This is natural human response and it is wise to acknowledge it. It is great that you prioritize avoiding such situations and recognize potential embarrassment and stress that can come with giving advice that does not work out. By being mindful of this you are showing a thoughtful and considerate approach to your relationships and that is something to be commended.