MC the Max's Lee Soo, who was recently cast as the lead in musical 'Mozart!' but stepped down from the role due to netizens' protest, uploaded an Instagram post that expressed sorrow for his continuous failures. 

Lee Soo wrote on the Instagram post he uploaded on April 20, "Thank you for all your words of encouragement, consolation, and criticism. I realized that I'm still very flawed to start working at something new. I experienced many rejections but this time it was more disappointing. I'm feel so sorry and hate myself for letting you see me constantly fall." 

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The singer concluded, "I will try my best to bring you good music and performances. I will keep at my work without straying from my duties I'm sorry to be the bearer of bad news once again, and I'm sorry, and I will come back to you a better person. I'm sincerely sorry." 

The Instagram account is now private. 

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A photo posted by @instant_isu on Apr 20, 2016 at 5:42am PDT