Jabeur, a two-time Wimbledon finalist, lost her most recent match earlier this month against Naomi Osaka in the opening round in Toronto.
Jabeur conceded she had been haunted by painful memories of last year's 6-4, 6-4 final defeat against Marketa Vondrousova when she returned to Centre Court on Saturday.
Three-time Grand Slam runner up Ons Jabeur said on Monday she will sit out this summer's Paris Olympics to avoid further injury to her knee.
World number three Coco Gauff came back from a set down to defeat Ons Jabeur and reach her second French Open semi-final on Tuesday.
Jabeur, the 2022 Madrid champion, took a swipe at tournament organisers, telling reporters she believes tennis still has a way to go to achieve gender equality, despite it being the leader in women's sport.
In her fourth Grand Slam main draw appearance since making her debut at last year's French Open, Andreeva showed maturity beyond her years as Jabeur desperately sought answers from her coaching team after the early jolt.
"It's very tough seeing children, babies dying every day," she said.
Defending champion Alcaraz, who has only dropped one set on his journey into the last eight, produced a dominant display to overwhelm Italian world No.61 Matteo Arnaldi, winning 6-3, 6-3, 6-4 in 1hr 57min.
Tunisia's Ons Jabeur said she feels like a "zombie" due to an illness she has been dealing with but the fifth seed is determined to soldier on at the U.S. Open after battling past Czech teenager Linda Noskova 7-6(7) 4-6 6-3 on Thursday.
Novak Djokovic, Tunisian world number two Ons Jabeur and six other top players will form the first executive committee of the Professional Tennis Players Association (PTPA) as it fights for a seat at the table with the sport's governing organisations.
Iga Swiatek surged to the third Grand Slam title of her career with a maiden victory at the US Open on Saturday, defeating Tunisia's Ons Jabeur in straight sets to extend her remarkable finals winning streak.
World number one Iga Swiatek rallied from a set down to beat Aryna Sabalenka 3-6 6-1 6-4 and reach her first U.S. Open final, where she will meet Ons Jabeur on Saturday for the trophy.
Russian-born Elena Rybakina powered back from a set down against Ons Jabeur to win the Wimbledon title on Saturday, denying the Tunisian world number two the chance to make African tennis history.
Tunisia's Ons Jabeur lifted the spirits of an entire continent as she became the first Arab and first African woman to reach the Wimbledon final with a rousing 6-2, 3-6, 6-1 victory over her barbecue buddy Tatjana Maria on Thursday.
Fifteen years ago, Ons Jabeur's young tennis sparring partner could see the Tunisian was destined for glory -- even if he suffered a broken arm in the process.