Device care optimization on OneUI 2

The new OneUI 2 update is all the way amazing, but I have faced a problem about the device care optimization service. On Android 9, I was able to clear all cache with just a single press on the optimization button. But on the recent update, it only optimizes the RAM and battery usage, but not the internal srorage. And I think it will be better if Samsung adds the old feature on their next upcoming updates.