You start off using です, but then to say you were a student, switch to the more informal だった. I would change that to でした.
I gave three possibilities for saying “video games” that could work. I’ve heard people use all three to describe the same thing, so choose whichever floats your boat. For listing things, や links two things together, so if you want to mention three or more, you can use “AとかBとか” etc. Since you mention three things (one of which is a trail-off) I changed your second や to など (Japanese version of etc.). You forgot a す at the end of the same sentence.
Since this reads like an introduction, you should end it with よろしくお願いします. For more casual introductions (like with people your age in a casual setting), you can use よろしく on its own.
Those are the corrections I came up with, but if anyone else has any suggestions, they’re welcome!
Good job with your first assignment!