As for your skills, speed, passing and shooting are obviously important irrespective of the position you play, and in any case are pretty much a given. Dribbling I guess is more of a midfield/forward skill, whereas tackling would be more midfield/defence. I think a lot of it comes down to how good you are at reading the field and game-making etc.
If you play good defense than you should be in the position near the goalie, more pressure there into not letting the other team score.
You can play midi, they run alot! And you run track so thats good!
Forward are the players who take the shots! They try to kick it to get it in right away, no passing but still is a lot of pressure.
Goalie is great too, just be aware and keep your eyes on the ball. You might get hit in the face tho, dont be scared of the ball!
If you are good in passing, dribbling, and shooting, you should considered playing as an attacking midfielder. Since you have good shooting and dribbling, you should be a forward. However, you are also a passer so you should be a midfielder. Since you have all of the qualities, it seems like you should play attacking midfielder.
Wide receiver