How do you know if you are depressed?

Depression runs in my family, my mom has it, my grandma has it, my sister has it, and my aunt has it.

I have no interest in doing anything. My life is one big loop I wake up and do the same shit every single day of the week and I have no motivation or even energy for that matter to fix it. I have a really nice gaming computer as I looooved gaming, but I have no interest in using it anymore. I have no interest in games, I have no interest in absolutely anything. Most days I lay in bed, and I feel like it’s getting progressively worse now. My mom keeps asking me if I’m depressed because I’m acting like it. I cry all the time, most of it for no reason. I’m always tired I either sleep too much or hardly sleep at all. I used to even love watching YouTube, movies, and TikTok. And now I don’t even do any of those. I used to love to go on walks but I feel like I don’t like doing it anymore. I just feel like I don’t want to do anything but lay in bed all day.

People tell me I’m always negative, I forget things so easily. I’m always confused.