 In a mixed review, "The Daily Telegraph" writer Alim Kheraj classified the song as "an unapologetically generic piece of pop", stating that while it reclaims negative connotations around madness and womenhood in contrast to Billie Holiday's "Crazy He Calls Me", Patsy Cline's "Crazy", Madonna's "Crazy for You", and Beyoncé's "Crazy in Love", it has allowed female artists the freedom to express themselves in order to attract an audience.The release of "Sweet but Psycho" led to the song being promoted on various streaming services, where Max saw an increase in streams and social media followers.It topped the Swedish Spotify chart and had strong engagement in Bulgaria, which led to Artist Publishing Group executive Mike Caren recommending that the song should be established in Nordic countries before expanding to the United States.