последний отчаянный(used to describe an act that is made at the end of a series of failures to solve a problem, and is not expected to succeed: last-ditch effort/attempt "They are now involved in a last-ditch attempt to save the steel plant. CBED Alexander Demidov)
последняя отчаянная попытка(A final effort or attempt to solve a problem or avoid failure or defeat, especially after a series of failures or setbacks. The home team is mounting one last-ditch attempt in the final seconds of the game to try to force an overtime showdown. In a last-ditch attempt to avoid a government shutdown, congress has pushed forward a new spending bill. thefreedictionary.comAlexander Demidov)