You're most likely ignoring lots of other things. Electricity consumption isn't usually just a few large things it's just everything added together. Like your fridge might only be like 4% of your monthly usage.
Even in an apartment, I think you can hook one of these up:
https://www.amazon.com/dp/B08G37ML2R/
It'll more closely monitor your usage at the circuit breaker level.
If that ends up way off, you've got an issue.
I bought this since my asic miner has a 240v 30amp plug. https://www.amazon.com/dp/B08G37ML2R?ref=ppx_pop_mob_ap_share
Easiest way is to get CT clamps and put on on your washer circuit and dryer circuit (if they are on their own circuit)
I recommend emporia vue if you want multiple circuit monitoring: