pretty sure the base load of the house was 400 - 600w last time I tested a year ago.
to be honest just normal living:
daily showers
oven/ microwave usage, kettle, coffee machine (probably this lol)
Fridge/freezer (uses nothing practically)
washing machine every other day and likely along with tumble dryer (heat pump)
Computers are on a lot due to working from home
TV couple hours a night
now admittedly I do still have my hot tub running at the moment and I have done for years as its regularly monitored and with it off I only save 5KW of usage, even with that off i tend to have high usage.
possibly thinking the neighbors are connected up as they were connected to my water usage!
That is a baseload 6x higher than mine (100W), you definitely need to figure that out.