"I want to improve aspects of my game," he told the official site. "I'm a perfectionist and maybe that's part of my problem.
"Sometimes I get frustrated and disappointed when things aren't perfect.
"Everyone knows my form hasn't been great. That goes without saying. It's been disappointing not to have been involved in every game.
"But it's up to me to work hard and get myself back in the team and improve my level of performance.
"It happens to everyone in football. We have highs and lows. But I'm excited and looking forward to turning that around at some stage in the near future.
"It started well for me at Liverpool. In terms of settling in, that hasn't been a problem. The club is fantastic from that point of view.
"There's no magic formula or reason why I haven't been playing well. It's just happened and I'm sure that will change."
