I'm only 25, but I find that I'm getting injured a lot while playing soccer. I'm the best player on my team though. Am I getting injured because I'm overworking my muscles?
Yes, fatigue leads to poor form which can lead to injuries.
Prepare and train properly to prevent injury
Unlikely at 25. Something else is going on.
Yes that is one possibility. There are many factors that can lead to injuries ranging from biomechanical instability, insufficient rest and overtraining, improper footwear and many other things. I would recommend getting a full in office consultation and assessment with a doctor with expertise in sports medicine.