What am I feeling? Is this depression?

I lost my mother last year, I grieved for her, I miss her loss, and I believe I've taken time to recover from her loss. Recently I've found myself not enjoying a lot of things, I don't find playing videogames fun, I don't have fun in watching tv shows anymore, I don't have it in me to go to the gym anymore ( I used to go), my energy levels are low, and I don't feel motivated anymore. I find myself taking showers late, really late, I eat my breakfast slowly, I just finish my work and watch YouTube and study a bit in the day. I don't know why I have no motivation with me every single day, nothing seems to be fun anymore. If anyone's experienced this, please tell me.