Johnny Manziel's had a rough few weeks -- he's single and he's injured -- so the star QB hit up an L.A. hot spot for some dance club therapy.
TMZ Sports got video of Manziel, solo, walking into Nightingale Plaza -- a West Hollywood club -- a little after 1 AM early Monday morning.
It's unclear what he did inside ... or how long he stayed at the spot.
Things haven't exactly been goin' Manziel's way lately ... Bre Tiesi wiped Johnny from her Instagram page and publicly accused him of breaking their wedding vows -- a year after they were married.