Clip the exactly and convert Raster Sentinel-1 in SNAP software

Hi everyone,
Currently, I am Sentinel-1 image processing and I have more question for SNAP software.

  1. How to clip the exactly Raster according to the Shapefile (vector) in SNAP software???
  2. After extract water and non-water. I want to convert to shapefile. how to convert raster to shapefile in SNAP software?

your first question has been answered multiple times, please have a look at these topics:

By now, SNAP doesn’t support vector export of rasters, as far as I know.

These topics, I have read but it seems that everyone has not clip exactly as required. Can you guide detail step by step help me? If possible. I am extremely grateful.
Thank you so much!