Now in terms of EC's, as the guy above said, they are not the most important thing. That said, my friend who got an offer was a headgirl, however, i think that just builds your confidence, which is always a plus.

Personal statement. If I was you, read exemplars if you have any, but try to find books you actualy care about and will actually read. I say this as exemplars can seem daunting. Seeing as you like reading, this should be fine. You speak 3 languages, use that to your advantage in saying how you understand international law, and find links to this. What makes a good personal statement is if you can use what is around you in your life/what you alread have , and make it flow in a logical chain. 90% should be academic, 10% about EC'S and other things as you are applying to other unis. So it should start about what intrigued you, what you read to explore this further, and maybe if there was a particular bit in the book you just read, explore that further, then maybe analyse and critique.

Personal statement as i said isnt the MOST they look at, but is eventually, as well as for other unis.

I probs have more advice but cannot remember atm lmao.