Where can I find more detailed data about my network usage?

I have witnessed a massive increase in my data usage, starting in December 2021, but my usage behavior has not changed. I would like to know where I can find more detailed data about my network usage. Please note, I have an Xfinity modem and have already changed my network passwords to make sure there are no unauthorized devices on my network. Additionally, I have scanned for malware and found no suspicious activity. Nonetheless, I have seen my average daily usage go from about 15 GBs per day from July-Nov 2021, to 35 GB per day since Dec 2021. But again, my personal usage and the devices connected to the network have not changed.