Pirates could only afford a draw at AmaZulu, and De Sa bemoaned missed opportunities in a game that they should have easily won
Pirates took the lead through defender Ayanda Gcaba, but let their lead slipped midway through the second half when Carlington Nyadombo met Marc Van Heerden's cross.
"We pushed them and dominated the game, but it's the same problem of not finishing them off in the final third," said De Sa after the game.
De Sa was pelted with missiles after the game, as the fans showed their frustrations, but he reminded the fans that he is not responsible for the wasted opportunities as he is not on the field.
"There's always a couple of brave guys that throw things from a distance. We don't go out there to miss and lose games. We tried today.
"There is a sense of entitlement with our fans and while some are sensible in their frustrations, there are some that take it too far."
"It's frustrating that we don't score when we are on top. I'm just as frustrated, but fans need to remember I'm not in the field," he added.
The Pirates mentor has always wanted a centre-back and a striker, and despite having Helder Pelembe in his team, De Sa revealed that the Mozambican isn't ready.
He also doesn't believe that Lehlohonolo Majoro is the answer to their goalscoring problems. Majoro is yet to join Bucs despite signing a pre-contract with them.
"Pelembe is not yet ready, Kermit is also getting into top shape. We have to get our guys ready before we just throw them in.
"People think Majoro will solve our problems. We won't know until he gets here if he does. You can't keep saying he is the answer," added De Sa.
Usuthu's Graig Rosslee praised his boys for the character they showed to come back from a goal down against Pirates.
"A great game, full of action. Both teams wanted to win. We showed good character to come back into the game," said Rosslee.
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