I joined Liverpool in the summer of 2017, I have a Champions League winner's medal with the club, I am known for my versatility, and I made over 200 appearances for the club, but not in the midfield. Who am I?

1. I am a full-back who can play on both sides.
2. I have been called 'the complete package' by my teammates.
3. I am known for my work rate and ability to cross the ball.
4. I wore the number 26 during my time at Liverpool