The Reds lead through Adam Lallana, but Ebenezer Assifuah’s equaliser quickly put the Swiss visitors level.
Despite a number of chances, Liverpool lacked conviction in front of goal and have now only scored a second goal in one game this season — at home to Aston Villa last Saturday.
“But unfortunately we [conceded] on the counterattack. With our threat, we created a lot of chances, unfortunately we didn’t manage to score the second goal that would’ve given us the victory we wanted.
“We have to be killers, kill the game off. If you score a second time then they go down and it’s very difficult to come back from that.
“But we learn from that and take it into the next few games.”
Liverpool 1-1 FC Sion — In Photos
Liverpool now turn their attentions to a pressurised Merseyside derby visit to Everton on Sunday.
Mignolet remained optimistic despite a frustrating and ultimately deeply disappointing night against FC Sion.
“We can bounce back immediately, we’ve got a great game to look forward to,” he added.
“Everyone knows it’s a Merseyside derby on Sunday so we’ll recover well after this game and make sure we’re ready for kick-off time.
“If we can get a good result and the three points we’ll be back where we want to be, so everybody will be focused.”
- VIDEO: Frustrated Adam Lallana looks to Liverpool’s “massive” game at Everton
- VIDEO: Brendan Rodgers after FC Sion draw: “It’s a rebuilding job again”
What are Liverpool doing wrong in front of goal and how can it be fixed? Let us know your thoughts in the comments section below.