RTL8761b bluetooth and bluetooth keyboard.

Good day to all, I will be as brief as possible.
I installed Kali linux 2018.4 on a USB flash drive, purchased a bluetooth keyboard, and an RTL8761b adapter for it. Having rustled on the forums, I realized that linux and this adapter are not at all friendly and, unfortunately, did not find a solution to the issue.
List of problems: 1) Bluetooth adapter rtl8761b does not turn on;
2) Bluetooth keyboard does not connect to the device (tested on another device with a functioning adapter).
I am ready to provide all the necessary information to resolve the issue, most importantly tell me what.
I do not speak English, I apologize for google translator.
Thank you.