That's not true! people care, in fact i think that the reason no one is saying anything is because they don't know how to help, i suggest seeing a therapist, or if you don't have the money to do so or don't want to ask or tell you're parents the situation then try to encourage your self or use positive self-talk. you can also vent to someone you trust like a sibling or close friend. I don't suggest posting vents online though, because there are toxic trolls who will bully you for it and most people online don't know what to say to stuff like this and usually skip over vents. I hope you get well soon :)