Bravo -- I have changed our way of acting (9)

I believe the answer is:

behaviour

I'm a little stuck... Click here to teach me more about this clue!

'way of acting' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'bravo i have changed our' is the wordplay.
'bravo' becomes 'b' (phonetic alphabet: alpha, bravo, charlie etc.).
'changed' is an anagram indicator.
'i'+'have'='ihave'
'ihave' with letters rearranged gives 'ehavi'.
'b'+'ehavi'+'our'='BEHAVIOUR'

Can you help me to learn more?

(Other definitions for behaviour that I've seen before include "manners" , "Conduct - performance" , "Personal conduct" , "Comportment" , "Conduct, demeanour" .)

I've seen this clue in The Telegraph.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.