I resent that. I think this is interesting.
Anyway I'm an anthro major but I am studied in some philosophy. I also studied both in english, not german so some language barrier pains. Hope it's cool.
1. Nietzche believes that our reality is reflected in our perspectives. If you cannot see meaning in the world, then there must be no meaning to it. It's your agency that gives the world meaning. You should seek meaning for yourself though, because if meaning is only attained by your perception of meaning, then by default there is no meaning until you decide there is. He is both a nihilist and not by this logic.
2. I'm less studied with Heidegger but from what I remember, without language, there would be no way to define anything in his mind. And because you cannot define it, it becomes impossible to prove its existence. Language speaks man. You exist because language existed to define you. A lot of people conventionally disagree with this, but it's a curious thought. You would have to imagine what it would be like to not have any type of linguistic symbol applied to your existence. I liken it to Eldritch horrors of Lovecraftian lore honestly but a step further. Not only was the thing indescribable, but also no language existed to describe it to begin with. Your consciousness would not even be conscious to comprehend it.