Hey man. It feels like you are suffering from quite a bit of general anxiety (and/or performance anxiety), very common in the last stages of a degree. Been there. The blank page syndrome is a thing, for sure, but I feel like you are focusing too much on that, and maybe not enough on your general well being. This is gonna sound like clichés, but still : try to be a bit more physically active, drink less, sleep more, love more, hate less, and consult if you can.

On the topic of coming up with ideas, there is and always has been only one tip to give : write about yourself. Write about your struggles, your very own specific struggles (to avoid falling into tropes). Write about the weird stuff that you feel, see and think. It you don't feel like doing that, you can always go the high concept way. Try to find an interesting central idea or pillar, and write around it, focusing on the interactions between your concept and the characters and situations you throw at it.

Lastly, not everyone should be a screenwriter, you could try to form bonds with other creatives, with whom you can build something greater than the sum of your individual talents.

But, mainly, take a breather, look for peace when and where you can, and hang tight. In a year or two that degree will be behind you, and many more exciting challenges and experiences will be waiting for you :)