The album contains guest appearances from Cardi B, JT from City Girls, SZA, Ari Lennox, Lil Durk, Pharrell Williams, Omarion, and Ciara.

In June, Walker shared photos in the studio with artists Omarion, SZA, and producer Pharrell Williams.

[5] In early October, Walker intended on appearing at the 2021 BET Hip Hop Awards' red carpet to announce her second album.

The dates hint at when the songs were either written, recorded, or developed, but symbolically represent the timeline after the success of Walker's debut album.

DeAsia Page of Pitchfork described Still Over It as a "journey through a messy and complicated breakup",[8] which is directly based on Walker's relationship with the producer.

The fourth track "Throw It Away" samples Keke Wyatt and Avant's song "Nothing in This World" as Walker mourns about a broken relationship.

"Unloyal" is a neo soul song with singer Ari Lennox and a saxophone solo, bringing both artists to a breaking point with their past lovers.

On the twelfth track "Closure", Walker sings about ending an unhealthy relationship over a nostalgic R&B beat inspired by Aaliyah.

The album closes with a narration from singer Ciara, delivering "an earnest appeal to Jesus to send her a deserving partner.

On October 4, the second anniversary of Over It, Walker released a teaser via social media, sharing a skit featuring herself and City Girls member, JT.

[14] The album was released on November 5, 2021, and available in both digital and physical formats, including a Target-exclusive, with an alternative black-and-white artwork and an additional a cappella bonus track of "Broken Promises".

[17] On November 28, Walker performed "Unloyal" alongside Ari Lennox at the 2021 Soul Train Music Awards, making it her second appearance at the annual ceremony after winning Best New Artist in 2019.

"[21] NME's Kyann-Sian Williams stated that "Walker has a song here for every feeling following a crushing break-up, from confusion to anger to outright pettiness – and it's the kind of unwavering quality that we all love her for.

"[2] Megan Jordan of Rolling Stone opined that "Musically, Over It nodded to R&B icons of the Nineties and early 2000s like 702 and Usher.

Still Over It builds on that sound, with poppier moments like 'Dat Right There,' and 'Ex for a Reason,' which features a hard-hitting rap from JT of City Girls.

The album moves smoothly and slowly on songs like 'You Don't Know Me,' the Ari Lennox feature 'Unloyal,' and the sexy ballad 'Screwin,' showcasing both Walker's multifaceted voice and the excellent range of duet partner Omarion.

"[25] Luke Ballance of The Line of Best Fit said although the album is "Littered with a variety of appearances from A-listers like Cardi B, SZA and Ciara over the course of its twenty tracks, it still finds Walker front and centre, with her characteristically introspective lyrics feeling more gripping than ever.