No idea what to do with my life

I think I have come into the realization that god does not exist and that we just happend to be here by chance. With that knowledge, I feel that we are all animals but just advanced ones, and that our existence just happens to come within chance. With that knowledge, you can apply the concept of after death, it is just a blank void. I feel like nothing matters and that everything is a complete waste of time and I have no idea what to do. I feel awful and like we are all fucked. I do not wanna feel like this anymore but I feel that with this knowledge, I can never escape it.