I have same issue on openhabian that “device no found” by either bluetoothctl or hcitool
and finally I found issue mostly like due to no user right on “pi” so command
"sudo usermod -G bluetooth -a pi" and restart should able fix this issue.
P.S. also need to add “–noplugin=sap” otherwise will get some error on openhabianPi which shows by “sudo service bluetooth status”