People will tell you a lot of things. Even if they don’t know, they can tell you what they think is true. In Paris if you ask for directions and the person you ask doesn’t know the way, they’ll still tell you a way. It took a while for me here before I realized that I needed to ask at least 3 people before I knew that the directions I was given were true. I learned this in the beginning and I remembered it now again. Just because someone else had a bad experience doesn’t mean you’re going to have the same one. If that was true, no one would ever be in a relationship for example.
Trust in yourself, your own capabilities and your own judgement.