Crudely

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

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

The crudely made furniture was unrefined and uncomfortable.

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

The map was crudely drawn, making it difficult to distinguish the different regions.

The crudely constructed birdhouse fell apart in the wind.

The builder crudely cut the wood, resulting in uneven and unstable furniture.