You'd be best as running back or a outside linemen.
you should goalkeeper because they lake of many.
Can you catch, run, block or tackle? its pointless to be strong and unable to do anything. I would say Wide Receiver, cornerback, or safety.
idk can you even catch, run, throw, or kick?
If you are good at kicking the ball, then maybe forward. If you're good at kicking the ball AND fast, then maybe half-forward. If you're fast and a good tackler, centre or midfielder. Tall and good at defending? Back/Half-Back. It's what ever you feel like you are most comfortable doing. Your weight, age and height doesn't mean anything.
Offense: slot WR or possibly RB. Defense: CB or Saftey or even a LB