I feel sad randomly

I dont know why but i feel sad regularly and like randomly, I know better than ask random people online for mental health advice but i am here to find out if people also feel this way, and if i am having some sort of mental issue. I dont have any money right now so even if i wanted help I cant really get any and I feel like i want to die but I dont really wnat to kill myself like whenever i pass by a building I just think about dying and so on...I really dont know what to make of this...I know I feel lonely and stuff but I dont know why I feel sad now, i have friends that I can talk to, a family I can talk to but I just cant seem to bring myself to talk to them...