There actually are randomized controlled trials suggesting mushrooms can help treat depression, addiction, phobias etc.
"You're looking outside of yourself" - Not at all, I'm okay with the mushrooms taking me inward for shadow work and introspection, in fact that's what I'm hoping they will do! The mushrooms are just an excellent guide to help facilitate that. Even Teal, the queen of shadow work and introspection has used psychedelics at points in her life for answers when she felt called to it. This notion of having to heal by yourself is flawed, if we're truly all one then getting help from the "outside", whether it be from people, entheogens or whatever, only makes sense.
And saying they "won't work for me" is quite absurd, how could you possibly know how these kinds of entheogens will work for someone else when everybody reacts to them differently based on where they are in their life, the way their individual brain is wired, their intentions, their setting, the dosage and a number of other factors? Even people who dedicate their lives to studying these things can't accurately predict exactly what someone else will take away from the experience because it's so incredibly subjective.