r134a a bit off-topic, but here is the Note 20 Ultra battery graph. Fresh setup, no SIM card. I only installed two apps and was reading articles on the Google app.
It was annihilated by my, by that time, almost 2 year old 11 Pro Max, which was also connected to an Apple Watch, had a SIM installed and tracking AirTags too.
I sent that sucker back REAAAL quick. It was around 1300€ at that time... Exynos is utter garbage.
On-topic: it's sadly not that easy to determine the root causes of battery drain. The graphs are sometimes inaccurate and don't really show how much hardware (modem, display, speakers) drained compared to software (OS and apps). Try investigating if the modem is the culprit by removing the SIM for a day.