Don't trust strangers easily. Be prepared for your friends. The corresponding understanding must also be done before investing in the project. Don't invest because of affection.
Just don't put your trust in anyone because your friends can also betray you. Many people nowadays believe that if we talk about money, your friends will be your worst enemy because you trusted them. I read about and witnessed many people being duped by their friends. Because there is money involved, it is best not to fully trust people, regardless of who they are.