(understand I was and will be forever alone) - and that's a scary one.
jjtech. I've felt several times this fear of "realising I'm the only one and feeling alone" and what gives me peace is the realisation that the untruth / egoic me is not alone, it is surrounded of other apparent people, and the True me, awareness, is not an individual, so sure it can experience feeling alone, but also friendship, infatuation, motherhood, ... but all these are part of the human tragedy, don't apply directly to awareness.
It's like if you teach a parrot to say "I'm sad because I can't write poems", it can look sad to people but doesn't affect at all the parrot. In this example people are the untrue egos, and the parrot is awareness.
At the same time I think we shouldn't avoid the sadness you are referring if it happens, it may be a door for our egos to admit their limitations, and it is always another experience enriching the movie in awareness.