Do the earth has less water than thousand of years ago?

The total amount of water on Earth has remained relatively constant over thousands of years, as water is continuously cycled through processes like evaporation and precipitation. However, the distribution of water has changed, with increasing amounts being stored in glaciers and polar ice caps, while groundwater levels and surface water bodies can fluctuate due to climate change and human activities. Thus, while the overall quantity of water hasn't decreased, its availability and distribution may be affected.