I agree. Nothing beats experience. So, instead of being a shut-in and avoiding contact, I’d encourage you to go out and meet as many people as you can, current situation permitting of course.
Another thing I’d urge you to remember is listen to their words, but more importantly observe their actions. Words are cheap. People can say whatever they want to say to make you believe them. But observe their actions. If their actions do not match their words, then that’s the time either to call them out or drop them.
There will be people who may make mistakes and may apologize afterwards. Everyone gets to make one mistake. After they apologize, observe their behavior. If they continue to behave the same way after the apology, then you have your answer. An apology without a change in behavior is just a manipulation tactic.