straighten out

settle or put right

• “we need to iron out our disagreements”

extricate from entanglement

• “Can you disentangle the cord?”

change for the better

• “The lazy student promised to reform”
• “the habitual cheater finally saw the light”

make straight

make free from confusion or ambiguity; make clear

• “Could you clarify these remarks?”
• “Clear up the question of who is at fault”

put (things or places) in order

• “Tidy up your room!”