On March 8, 2021, she joined in the kids co-ed group Play With Me Club. They made their comeback on September 3, 2021, with the second digital single "We Are". On March 25, 2022, she graduated from the group.
On October 21, 2022, she was revealed as a member of the upcoming girl group Free In Sass.
On January 16, 2023, AMX Entertainment announced, through an Instagram story, that Yoona had terminated her contract and left the group due to personal reasons.
On July 17, 2023, Yoona was introduced as a contestant on the SBS survival show Universe Ticket.
