Photo: Devin Oktar Yalkin The 58-year-old actor Adewale Akinnuoye-Agbaje had never worn a cowboy hat, ridden a horse, or seen more than a couple episodes of Euphoria before being offered the part of cowboy crime lord Alamo Brown. “I did love wearing the hat,” he recalls from a restaurant patio on L.A.’s Westside. Akinnuoye-Agbaje is tall and handsome and has a lilting accent he describes as “North London tinged with a hint of Cockney.” He’s a jarring contrast to his character on Euphoria, a