Thats a very easy excuse for the mistakes, its not like US forced itself into this operation, its being coordinated with them for more than a year, their SOF joined the operation with Turkeys consent.
There are two scenarios:
-Turkey wasnt smart enough to recognize the fact that FSA wouldnt want to fight alonside US.
-FSA betrayed Turkey since its impossible that they didnt knew about US involvement, US made numerous statements about their involvement in the operation numerous times and even helped with airstrikes on the first days.
Which one do you like more?
If our goverment was smart they would make a deal with SAA (if it isnt too late already) and attack ypg together, which would automatically involve Russia and Iran.
But this isnt very unlikely too, Erdogan doesnt really have any ally left that would trust him at this point anymore, wrong FP of the last decade destroyed most strategical scenarios at once, bravo.
Last scenario is an invasion with thousands of soldiers, this would cost us more than just money though.