BTRFS file system

Clash Royale CLAN TAG#URR8PPP
BTRFS file system
I am new to btrfs world. How to find underlying device of BTRFS? Like is it a disk or LVM or a partition? I have tried commands like btrfs scan device. But it just gives the general statistics of the device but not actully a type of device. Any suggestion is appreciable.
btrfs scan device
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Probably related: btrfs.wiki.kernel.org/index.php/FAQ
– xmojmr
Aug 13 at 9:40