Sorry some people on this board aren't being very kind to you at all, OP.
("In the kindest possible way" my arse... Try harder guys, your low standards are showing!)
A lot of people are terrible listeners. They don't want to hear about other people's issues, no matter how big or small. Small issues are systematically dismissed (someone, somewhere, is always having it harder than you, so just put up and shut up), big issues are "too much" (people just vanish).
You can be a wonderful listener yourself, always available to help when others struggle, and still find yourself essentially alone when you're the one facing problems. If you put on a brave face, people assume you're coping well, if you complain about your lot, "it's really not that bad", and "you need to grow a thicker skin".
I know from first hand experience. It's a bitter realisation that most people really are shit friends. Not all are, though. Cherish the bond with those who really care. And if there's no one like that around you at that time... You need to work real hard on being your own best friend. Focus on that. Everything else can wait. Be that friend to yourself, that others are failing to be.