I can't really solve your shaking problem but my washer shakes a bit (not crazy but it does vibrate the upstairs) so I bought pucks on Amazon and they stop the washer from shaking heavily.
We obviously should have done that 60 years ago when climate change was becoming recognized. We didn't because it would impact profits and slightly modify our way of life. Now that impact is much greater so people dont want to change. The problem is we will eventually have to address it and pushing it off to the next generation is compounding the problem.