u/Efficient-Zombie7688

So I love to write and I've read countless books. I'm thinking of just writing smth for fun/for friends thats themed around sci-fi? I've seen all the big movies, read a lot of the popular books and such, but of course I can only think of so many ideas to add. (I've put a lot of time into multiple cultures per planet, species variation, languages, technology, and designs that make sense evolutionary) So yea, what are tropes, representations, or ideas that should be used or expressed more in sci-fi? And the same goes for things that are overused/corny in sci-fi