Wolves ease past Armenia's Pyunik 4-0 and 8-0 on aggregate, reaching the Europa League play-offs where they will face Italy's Torino.
Torino need a top-four finish to qualify for the Champions League for the first time, and are sixth with 57 points.
Ancelotti says players played well but ultimately, the lack of scoring is unacceptable.
Inter have 40 points from 21 games, 8 behind 2nd-placed Napoli and 5 ahead of AC Milan.
The 19-year-old goalkeeper made two outstanding first-half saves as he punched away Iago Falque's header from close range and turned Andrea Belotti's curling shot past the post.
Lorenzo Insigne's two goals helped Napoli beat Torino 3-1 and put Napoli in a tie for the Serie A lead with Juventus.
Inter Milan lost a 2-0 lead to draw 2-2 against Torino.
Edin Džeko's late volley gave AS Roma a 1-0 win over Torino, while Inter Milan lost by the same scoreline against Sassuolo.
Despite opening their Premier League campaign against West Ham on Sunday, Jurgen Klopp named a strong team and was rewarded by seeing key players get valuable game time.
De Rossi helped his team win after attending the Florence funeral on Thursday of his friend and former Roma and Italy team mate Davide Astori, who was found dead on Sunday aged 31.