DIY- Not enough hot water|Water heater temperature knob settings

how can you do if you don't have enough hot water, let's see the bottom of the water heater tank. there should be a gas valve and dial on the gas valve, we can see low a b c very hot, the knob temperature setting shown you here, and you can adjust by your requirement, but normally setting b is enough for you. we don't recommend setting to very hot that may be triggered. relief valve and flooded basement.