Justin Timberlake’s last studio album, 2018’s “Man of the Woods,” on which the pop superstar got his Americana on.But many of the fans who had rocked their bodies to his previous hit LPs — from 2002’s “Justified” to 2006’s “FutureSex/LoveSounds” to 2013’s “The 20/20 Experience” — weren’t feeling the flannel on JT.And, by his lofty standards, “Man of the Woods” was the first (relative) flop of his career. It was the first real misstep from a man who had seemed to have all the right moves as he smoothly grooved from curly haired boy-bander to sexy-MFing solo sensation.But on “Everything I Thought It Was,” Timberlake, now 43, is back to being a Man of the Dance Floor, a Man of the Bedroom and even, once again, a Man of the Boy Band.(Yup, *NSYNC is back!)Suffice to say, Chris Stapleton is nowhere to be found on this joint.Clearly, Timberlake is trying — almost desperately — to make up for lost time on his sixth solo LP, which stretches out to 77 minutes.And no, it’s not a double album.