You've got to get almost annoyingly serious about trusting yourself. You heard what you heard. You saw what you saw. You felt what you felt. Your body is speaking to you. Believe it.
i actually think "surface level" friendships are very healthy. not everyone in your life has to be your ride or die. some friends are for the gym. some are for going out. some are just for complaining about work or bureaucracy. when you stop expecting everyone to be your everything, the disappointment disappears. those deep convos and connections are for the 2-3 people closest to you