Maybe don't enable the cross-platform play.
After the strategy of Disgaea 5, the next free trial for Switch Online members will be a faster paced shooter.
Overwatch will be free online for Switch Online members beginning on October 13, with the trial running until October 21 at 2:59 a.m. ET (11:59pm on the 20th Pacific time).
The free trial comes at the one year anniversary of the game's Switch launch (October 15, 2019).