This driver can be tricky to find, so I have included it here for everyone.
Realtek Bluetooth 5.0 Driver (RTL8761b)
Realtek Bluetooth 5.0 Driver (RTL8761b) [Win7,Win8,Win8.1,Win10]
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Realtek Bluetooth 5.0 Driver (RTL8761b) [Win7,Win8,Win8.1,Win10]