Destro vs Sin?

[Nainty]

So I was plat last season, climbing atm (currently 1650) but the class I can't seem to beat unless they really mess up is sin, flower and tab are such short CD's they just always seem to be up i can never tech chase.. They just either get my blue buff and tab and I'm dead within 1 combo, or they come in do dmg and kite me around the map until the timer runs out? Does sin just counter destro bad or am I playing it wrong?