If that works permanently, add btusb to /etc/modules .
When you plug a Bluetooth CSR 5.1 dongle into a Windows 10 or 11 PC, the operating system will automatically install a generic Microsoft driver. For basic mouse and keyboard functionality, this works. However, users frequently report three major issues with the generic driver: bluetooth csr 5.1 dongle driver
brought significant improvements to location accuracy (centimeter-level finding) and enhanced GATT (Generic Attribute Profile) caching. For desktop users who want to upgrade their PC from Bluetooth 4.0 or 4.2, a CSR (Cambridge Silicon Radio) 5.1 dongle is an affordable and effective solution. If that works permanently, add btusb to /etc/modules