Yes, it can be very hard.
Not from my own experience but from my wife. She struggles with emotional and mental difficulties that as much as I read about and look into I can’t fully appreciate myself.
But don’t mistake people not understanding with not caring, so many friends and family if they did know how it was for you, would jump to your aid and say the perfect things, but they can’t.
I ask my wife endless questions about how she’s feeling, and give her time to think about how to explain it. If you can find someone with time to hear you then never give up in trying to make yourself inderstood. Nothing shows you that someone cares about you more than a willingness to patiently listen.
I hope you can’t find someone who can understand you and am sorry it’s so hard.

FF