I Battle Depression and Anxiety

I'm not really sure if I'm depressed. Maybe I'm just so sad about how my life is going. I usually just can't help but to cry when I'm alone...sometimes on the bus where people around doesn't really care if I cry. I'm just so tired about everything and about how I end up like this. There's no one I can tell my stories with. I overthink things. I feel like life will be so much easier if I just didn't exist at all... well, there will be no life, technically. But that's how I'm feeling right now. I just want everything to end. I'm usually thinking if there will be a better future for me because I don't want it to be just like now. To be honest, I usually think about suicide but I'm too afraid to do it. I don't know if that's a good thing but I'm really tired and sad about everything.