Why is pulmonary respiration on land more promising than branchial respiration?

The gills play the role of the lungs, but only in water, they help extract oxygen, which saturated water. On land, the gills will be of little use, because there are no bodies of water. So, due to evolution, fish had to adapt to survival on land, which is why they had to develop lungs that help them breathe air. The lungs filter gases and saturate the blood with oxygen, the gills cannot cope with the effects of so many gases, so the fish on land suffocate.