The 22-year-old midfielder enjoyed an impressive start to life at Anfield after completing his £15million summer move from Swansea, but a failure to maintain those high standards has seen the Welshman relegated to a place on the bench in recent weeks.
He said: "Everyone knows my form hasn't been great. That goes without saying. It's been disappointing not to have been involved in every game and play every game. I'm delighted to be back with the Wales squad, I am looking forward to hopefully being involved on Wednesday and I will try to put in a good performance if I do play."
Allen came in for particular criticism from Reds fans after a poor display in the defeat against Manchester United, while earlier in the season Match of the Day pundit Alan Shearer accused him of being too "safe" in his approach.
Allen is honest enough to admit some of the flak that has come his way has been justified, but is hoping to bounce back when he wins his 13th cap at the Liberty Stadium.
He added: "It's up to me now to work hard and get myself back in the team and improve my level of performance.
"It happens to everyone in football. We all have highs and lows. But I'm excited and looking forward to turning that around at some stage in the near future."
Of his criticism from former Blackburn striker Shearer back in the autumn, he added: "Alan Shearer's career and Premier League experience was incredible. When he speaks, people listen.
"I think I can use it as a springboard to help improve my game. It's always interesting to see what those players have to say. I want to improve all aspects of my game. I'm a perfectionist and maybe that's part of my problem.
"Sometimes I get frustrated and disappointed when things aren't perfect. In terms of what Alan said, I can try and learn from it. It's difficult because at the time I thought I was playing well but people can have their own opinions."
- Sports & Recreation
- Alan Shearer