However, the search for a new home is currently underway, because as TV Line notes, Cinemax is no longer pursuing original programming...
https://www.hitc.com/en-gb/2020/01/28/jett-season-2-renewal-status-cinemax-sky-c arla-gugino/
As of July 23, 2020, Jett has not been cancelled or renewed for a second season....