You are born out of another human but even they can never understand you fully, they can never experience you fully, they can never know you fully. The problems of parents and kids are all coming from that and are old as time. If even parents can't do that there is no chance with other people.

This is the trick of the universe, or a trade-off if you will: being completely alone also means being completely free in terms of internal experience. If you realise that - that is the greatest gift, if you are unaware it can feel like a curse.

You're arguing for solipsism.