Forest failed to return to winning ways in the Championship, as they played out a 1-1 draw with Leeds at the City Ground.
Nelson Oliveira took advantage of a mix-up in the Whites’ defence to put the home team in the lead in the 17th minute.
Steve Evans’s side, though, staged a comeback and equalised in the 80th minute through a low strike from Sam Byram.
Lansbury, who started the Championship game and played for the entire 90 minutes, has taken to Twitter to express his disappointment at the final result.
Oliver Burke, an 18-year-old winger, came on as a substitute for Forest in the second half, and he was glad to be back playing.
Feels like a defeat but we go again big time of the year stick together Nffc— Henri Lansbury (@lansburyhenri) December 27, 2015
Very happy to finally get myself back in the squad and play my part. Thanks for all the messages means a lot! #nffc— Oliver Burke (@OliverBurke55) December 27, 2015
Over the course of the 90 minutes at the City Ground, Forest had just 39% of the possession, took 16 shots of which only three were on target, and earned five corners.
Dougie Freedman’s side are 13th in the Championship table at the moment with 29 points from 23 matches.