In March 2019, Kim represented Jellyfish Entertainment together with fellow trainee Choi Jun-Seong on the reality survival show Produce X 101 for the chance to debut in a Mnet boy group.

On August 25, he held his first fan-meeting 'Nineteen, Minkyu' at Kwangwoon University's Donghae Culture and Art Center.

[8] On February 7, 2020, Kim was chosen as one of the new hosts for SBS M's music program The Show alongside The Boyz's Juyeon and Everglow's Sihyeon.

[9] In June 2020, Kim made his acting debut in Playlist's web drama "Pop Out Boy!"

[10] On August 10, 2023, it has been announced that he decided not to renew his contract with Jellyfish[11] and signed with new agency Kang Entertainment.