weird cake

baked a marble butter cake and brownies today. The butter cake does not turn out as expected.The texture is bouncy(like rubber) and has a crispy crust and i think i put too little sugar.i wonder how to get a soft theture and taste like what i eat outside?

marble cake wth crisoy crust and bouncy texture...(failed cake)

The brownies taste not bad just that it is a bit dry.....guess not enough butter or other reasons