Brazilian footballer's blocking bad shot, almost desperate (8)
I believe the answer is:
hopeless
'desperate' is the definition.
(similar in meaning)
'brazilian footballer's blocking bad shot almost' is the wordplay.
'brazilian footballer's' becomes 'Pele's' (Pele is a former Brazilian footballer).
'blocking' indicates putting letters inside.
'bad' is an anagram indicator.
'almost' means to remove the last letter (most of the word but not all of it).
'shot' with its final letter removed is 'sho'.
'sho' anagrammed gives 'hos'.
'peles' inserted into 'hos' is 'HOPELESS'.
(Other definitions for hopeless that I've seen before include "Having no reason expect a good outcome" , "With no chance of success" , "Vain" , "Despairing, forlon" , "Unachievable" .)