“Something Anxious” at this year’s Hollywood Fringe Festival presents two one-act plays within an hour connected through tone, tension and the feeling of being trapped in situations that are both funny and unsettling. First up, “Anxious Attachment,” leans into technology, isolation and escape, while “Something Ancient” shifts into apocalyptic family dysfunction. Together, both plays create an evening that is simple in structure but effective in execution. “Anxious Attachment,