By FOX Sports staff
The weekend's defeat was the Nerazzurri's second in four days following a 3-0 humbling at the hands of Tottenham in the Europa League, and they are now fifth in the league and trailing leaders Juventus by 15 points.
With Inter also trailing Roma 2-1 on aggregate in the semi-finals of the Coppa Italia, there is a big chance they could end the season empty-handed, and Zanetti admits spirits are currently low in the dressing room.
"It's a tough time," he said on the club's official website. "You lose a bit of belief when things aren't going well.
"We now need this to end as soon as possible because it can't continue; we need to rediscover our confidence. We're working on it but it's not easy.
"We really needed a convincing performance from everyone [against Bologna]. We all must try and give more."
Inter are next in action on Thursday when they entertain Spurs in the return leg of their Europa League last-16 tie.