Keep on trying, though always among unruly peers (9)
I believe the answer is:
persevere
'keep on' is the definition.
(thesaurus)
'always among unruly peers' is the wordplay.
'always' becomes 'ever' (synonyms).
'among' is an insertion indicator (inserted letters are placed among others).
'unruly' indicates an anagram.
'peers' is an anagram of 'perse'.
'ever' placed into 'perse' is 'PERSEVERE'.
'trying though' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for persevere that I've seen before include "Persist steadily" , "Hang on in there" , "Battle on" , "give it another try" , "Continue despite difficulties" .)