Because your power usage and battery drain numbers do not make sense, it seems likely the sleep study report is not seeing whatever is draining the battery and not reporting the situation accurately. Perhaps try the report below and see if you get different info that might explain the situation.
powercfg /systempowerreport
My system does not go to sleep while streaming online video/music from YouTube. Since yours does, have you done anything to modify the Modern Standby behavior on your system?
Have you tried another browser like Firefox?
Because of the utility that runs with Edge, which you see highlighted below, and the one in your sleepstudy report, there may be a Bug in Edge that is allowing your situation to continue. It lets the system sleep but does not turn off the Audio service, which is probably keeping the DHCP running also.