You don't really need a big point or goal in your life. You might be in pain now when you live, but you know that you appreciate some parts of life. Like experiencing nature. So focus on nature, try to go for a walk every day. You can't do that when you are dead, and you will be dead one day. Try to get the most of the small things in life that you enjoy. I am also struggling with this right now, I don't feel like there is any point. I don't think I will live past my 30s, I can't imagine life after it. But I know death will come one day anyway, so I try to focus on things I still enjoy and live life even how numb it feels.