How many gallons / litres is your home water heater?
We live in a suburban 4 bedroom detached home. I find that after my wife and kid shower, I’m stuck showering in cold water.
Are they using too much water or is my water heater just not big enough?
Edit: not my photo. We currently have a 50gal tank.
Have you ever flushed the tank? If there is sediment in it, you lose volume to that. But if you haven’t done it annually from new, you can cause more harm than good by starting to flush it now.