That's my screen resolution. Its really hard to see what is going in in a team fight. I tried to change it once but it was too big and I mad to manually change it back. Is there anything I can do? I have seen videos where they can zoom and see far away, as well as different angles, how can I do this?

Change your resolution to something larger, then adjust the UI Scale slider if the H.U.D. is too big/small

What is the UI scale slider?

it's in the options somewhere, and shouldn't be hard to find. it changes the size of your Heads Up Display (your health and mana bar, the mini map, your inventory and ability icons).