Land cover and land use maps, as well as Landsat mosaics, can be downloaded through the following link:  MapBiomas Colombia Collections

In this LINK, you will find video tutorials that will guide you step by step in downloading the maps and mosaics using the tool on Google Earth Engine, This tool allows for the complete download of collection, as well as the option to download specific territorial or temporal periods.

Don't forget to download the legend codes necessary to interpreting the maps. You can obtain them at: Legend codes