Submit Instagram review on metal deposit (4,2)
I believe the answer is:
give in
'submit' is the definition.
(synonyms)
'instagram review on metal deposit' is the wordplay.
I cannot really understand how this works, but
'metal' could be 'in' (In is an example) and 'in' is found within the answer.
The remaining letters 'give' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for give in that I've seen before include "Cease fighting" , "Surrender informally" , "Yield in argument" , "Yield, accede" , "Surrender, cease to resist" .)