Analyze SAR image using SNAP

I want to analyze and understand the behavior of water and wetlands in SAR images.
I have SAR images that were taken at different dates for the same region. I did the dB calibration and I tried the k means classification.
Are there other SNAP tools that can help me with analyzing the backscatterer of SAR images?
I don’t have experience in dealing with the SAR backscatterer so your suggestions and advice will help me a lot.

Thank you!