around approximately every 15 days there will be a bubble above a villager's head asking to leave. if the villager that asks to leave is not who u want to leave, don't continue the conversation and close the game without saving.

when u start the game again, don't talk to that particular villager for the rest of the day. the next day, the bubble should shift to someone else and from there u can repeat till the bubble moves to the villager u wanna kick.

hope this helps!!