Mine is not much better, but at least I can see my water pump. I installed a "water pump silencer kit"
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1; this helped some. Then I installed a foam pad under the water pump; that helped a little more. The thing that helped the most was using pipe insulation on the water lines near the pump. Insulate them everywhere they touch each other or anything else. The water lines are what propagate most of the noise.
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Scott & Alta
2017 Montana 3160RL, Legacy, Onan 5.5Kw, Solar
2022 F-450 Lariat Ultimate