Crudely

The crudely constructed bridge swayed in the wind and was unstable.

The engineer crudely designed the bridge, resulting in structural issues.

The athlete crudely tackled the opponent, resulting in a penalty.

He crudely drew a map for his friend, leading him to get lost on the way.

He crudely assembled the machine, resulting in a malfunctioning product.

The athlete crudely insulted their opponent before the match.