The Magpies are now on the hunt for his replacement, and the likes of ex-Roma boss Paulo Fonseca, former Borussia Dortmund manager Lucien Favre, and English duo Frank Lampard and Eddie Howe are all thought to be leading candidates for the job.
Speaking after his departure from St James' Park, Bruce gave a brutally honest assessment on the struggles he faced at the club, and said: “I really have to thank all the people who have worked alongside me, because I can be demanding and I can be hard work - especially when I was younger.
“When we get beat, I get very low, but when you are managing in the Premier League with Birmingham, Wigan, Hull, Sunderland you do get better at dealing with it. You have to.
“By the time I got to Newcastle, I thought I could handle everything thrown at me but it has been very, very tough.
He continued: “To never really be wanted, to feel that people wanted me to fail, to read people constantly saying I would fail, that I was useless, a fat waste of space, a stupid, tactically inept cabbage head or whatever. And it was from day one.
“When we were doing OK results wise, it was ‘yeah but the style of football is rubbish’ or I was just ‘lucky.’ It was ridiculous and persistent, even when the results were good.
Take a look at all the latest news from the Premier League, as the reaction to last weekend's exhilarating action continues:
5. PSG plot Salah raid
PSG have reportedly already set their sights on their marquee signing for next summer, with Liverpool's Mohamed Salah and Borussia Dortmund's Erling Haaland top of their wish list. The former has already scored 13 goals in ten games this season. (Mirror)
Photo: David Ramos
6. Reds could re-sign Sterling
Liverpool have been tipped to make a sensational swoop for their former star Raheem Sterling, as the Man City ace continues to be linked with a move away from the club. PSG and Barcelona have also been muted as potential destinations for the Euro 2020 star. (Bild)
Photo: Alex Livesey
7. Real Madrid challenge Chelsea for Kounde
Real Madrid could be set to challenge Chelsea for the signature of Sevilla's Jules Kounde, as interest continues to grow in the versatile defender. The Blues had a £42m offer rejected for the 22-year-old last summer. (Daily Mail)
Photo: FRANCK FIFE
8. Foxes sensation knocks back new deal
Leicester City midfielder Youri Tielemans is believed to have turned down a contract extension. The Man Utd and Liverpool linked star is now "weighing up his options", with his current deal expiring in 2023. He joined the Foxes for £40m back in 2019. (90min)
Photo: Alex Pantling