Translation of "Unskilled" in Japanese

At that time, bicycles were just starting to get popular and, here and there, there were many unskilled beginners who ran into people and broke through their hedges.

その頃は自転車の流行り出した始めで、下手な素人がそこでも此処でも人を轢いたり、塀を突き破ったりした。