Your maths needs a bit of work? Last time I figured it, "average" on a 7-point scale would be about 3.5? Five sounds pretty good! But I would not look at the grade, I'd look at what you are learning and what you'd like to learn better? You don't need distinction from them, just from yourself and for your purposes, come up with your own goals for the courses you are taking. If they cannot see how brilliant you are, that's their loss Do your tests or papers come with feedback?

I am about to get my second paper back (got a 59 on my first, 60 is "excellent" so I know where you are coming from :-) but my tutor sent everyone a page telling us how we could improve and I made sure I did everything on that paper! I'd better get at least a 65 on this one :-) It's a game, play it the best you can by their rules but don't forget you are playing for yourself and what you are doing/learning may not necessarily correspond to what they want you to do/learn. Experiment, play, enjoy yourself!