I'm not sure what exactly you mean here. Some people definitely care about you, but perhaps they have their own sh*te to deal with and aren't able to show how they feel for your situation at the same time. Or if you mean you don't want other people to be sad for you, well, it's not your responsibility, as long as you understand their position. Everyone has to learn their limits in terms of empathy and compassion. If you feel like it really hurts them to hear about your problems, like they're too vulnerable right now, perhaps seek someone else, there's definitely people who are able to manage.

On the forum you can talk about anything, always.