This is indeed fearful!!!!!!
It's so sad...
Like, this is the problem of not knowing others' brains. You only live your subjective life. You may think incorrectly about others, make generalizations only based on a small population, e.g., receiving huge blame from one may think "everyone hates me!!!"
You don't know. You cannot read minds. It's hard to detect lies and truth. (only 54% accuracy)
However, this links to an interesting experiment, where if joy and sad were determined, if you were only in a Simulation (that is identical to real life except the people are just not real), of course, if you didn't know you were in a simulation, you wouldn't have acted differently in real life (or felt)
So where you don't actually know what a simulation,or life, means, but sure, you can live it anyway!
I think this is the ultimate advice. Even if others may not exist! You feel good. You feel pleasure. You feel power. The power to control the self!
Control the self also means to LIVE ON! cannot die! Suicide is not recommended!
So there can be fear, but there can be life.
Yet, you don't know, and you absurdly continue, The human brain cannot comprehend anything other than stimulus. Bravo.