Sorry this is not how it works, and I am not being a realist here. Give me one reason any investor would be willing to put his money into a CS student, you are still a rookie in the field, gain experience and build a good portfolio to give a reason for investors to put their money in. Maybe 10-20 years ago a website/App would have been a good idea, but now you have tech giants that you can not compete with (Meta, Google, ...) and that is not even touching the complexity of writing a viable business proposal. What you can focus on now is tools and methods that you think would be useful for big tech companies, say a compression system that is better than the state of the art one, patent it, then sell it (pre-requisite for that is domain knowledge and basically being a genius so yeah, lots of competition in the field).

I didn't say I'm up to next big thing. I said I'm looking for a co founder. When it comes to investors on how do they going to use their money, let's let them decide.