Pop star Taio Cruz spoke about her reasons for leaving TikTok, saying she wanted to preserve her mental health after having "suicidal thoughts".
The musician, whose hits include Dynamite and Break Your Heart, said he was targeted by videos and "hateful" comments about the video sharing app.
"My body was shaking and I had suicidal thoughts," she explained on Instagram.
"I'm proud to be mentally resilient, so the fact that I felt that way shocked me too."
The 35-year-old added: "Some users have posted hateful and mocking videos that sparked a feedback loop of negativity, in which more and more people have begun to participate in derision and hatred.
"My intention was to make some fun videos and interact with my fans, but some, which I won't talk about, were against that.
"For my mental health, I'd rather be where I'm welcomed, for now, TikTok isn't that place. Social media shouldn't be like that, sadly it is."
The London-based singer rose to fame in the late 2000s, scoring two number one singles in the UK and writing for artists such as Jennifer Lopez, Usher and David Guetta.
He joined TikTok earlier this week and quickly gained 85,000 followers, but on Wednesday he abruptly deleted all of his videos, posting a message saying, "Never in my life have I had a more negative experience than the last. days here ".
"This community is not for me," he added.
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The BBC understands that the musician has been targeted by messages accusing him of being irrelevant and "begging for influence".
A user who wrote: "I just watched one of his videos [and] it flowed so fast, "he received a response from the star, who simply posted the shrug emoji.
Most of the comments were posted under Cruz's videos, which are no longer available.
After the musician deactivated his account, fans sent him support messages on social media.
"Your music has made me smile since I was five," wrote one Instagram user. "I'm so sorry, please remember how strong you are."
"We love you and we can't wait to hear more songs from you. You are an absolute legend," added another.
TikTok star Dixie D'Amelio, who has 38 million followers on the platform, also expressed her concern.
"This makes me so sad," he wrote on Twitter. "You mistreated a legitimate music artist outside of TikTok in less than a week ... WHAT ??? Be nice."
In a statement provided to the BBC, a spokesperson for TikTok said: "We are a huge fan of Taio and are extremely disappointed that he has experienced negativity from a limited number of users.
"TikTok is a safe space for our community and we have a zero tolerance approach to bullying and harassment.
"We are in discussions with Taio management and the matter is under investigation with our trust and security team."
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