My advice to nihilism:
First, open your eyes and look around the world, I mean the real world. Second, move your body, go meet the world in a physical way. The world doesn’t stay in your words; the world is the world. There are people you don’t understand, people you don’t know, people you never think about, and there are trees you never imagined, and there are birds you didn’t even know existed. There are mountains, rivers, and seas. They will totally stun you in an amazing way.
And you should punch the world in the face and let the world punch you back, and then you get your bruises, you get your bodily experience. Nietzsche said he was doing philosophy by hammering the world, and you should take your body as a hammer and hammer the world too, just as Nietzsche did. And when you start doing all those things instead of staying immersed in your tiny brain, then you will find that the world is so real, and all those language games you believed in so much only exist in your brain, in your imagination, but are totally not the real world.