Wanderers scored first and last, through Stuart Beavon and Joel Grant, but in between time Andy Williams hit a brace and Kieran Agard headed the third.
Waddock said: "If I'm being brutally honest, we didn't deserve anything from the game.
"We took the lead but I didn't feel we deserved to be in front - I thought we looked very nervous and they moved the ball better than us.
"It's not just here - throughout the season we've got ourselves into a lead and for whatever reason we make a mistake and they get back into the game.
"We then concede goals quickly after that instead of shutting up shop and we seem to fall apart."
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