Having suffered a broken bone in his right hand during pre-season, Karius had to bide his time before he could be fielded between the sticks.
That eventually happened in mid-September, but after errors against Bournemouth and West Ham before the festive period, he was heavily criticised.
Simon Mignolet was restored in goal for the 3-0 victory over Middlesborough on December 14, with the 23-year-old only playing in the cup games.
The challenging settling-in period has, however, not affected Karius’ feelings about his transfer.
"I do not regret coming here,” he told SID.
“I am happy to be here every day.
"When I came here, my aim was to be the number one and that is still my claim.
“But after my hand injury in the summer I needed a little longer to find my form again.
“Now I want to help the team on the pitch to reach our big goal, a place in the Champions League.
“I am more than ready. I train on a very high level and I am physically in top shape."
On the battle to be Liverpool’s first-choice keeper, Karius added: "My relationship with Mignolet is normal. We can only get better in training if we work in the same direction. But it is obvious we both want to play."
"Of course I am happy about that,” he said. “Sooner or later I want to be a part of that team. Since I played well in the Bundesliga for several years I am not surprised I am one of the candidates behind Manuel Neuer."