This video will give you full idea how to extract flooded area from 2 different dates images of Sentinel 1 SLC product. From SLC product importing, debursting, calibration, multilook data generation, image stacking and finally RGB composite image creation all are well described in this video. Most important taking data in ArcGIS pro for further analysis. This process is good if you want to do analysis over SLC product but its better to do flood analysis over GRD product.