Some Earth Engine codes for landcover change detection. You can run this by insert your study area and changing the date.
Earth Engine code for unsupervised clustering using Kmeans clustering techniques.
Wagle, N. et al. Multi-Temporal Land Cover Change Mapping Using Google Earth Engine and Ensemble Learning Methods. Applied Sciences, Volume 10, Issue 22, 2020. https://doi.org/10.3390/app10228083