loaded but can not use it
I did as you guys said in README but...

And I run reaload_all also but didn't change anything
apt-get update
The path you are storing may not be correct. You need to re-check the location of the module.
I'm using ubuntu and in /opt/metasploit-framework/embedded/framework/modules/exploits/windows all of the exploits modules for windows are there
How To use:
Simply make folder named rdp (for convenience) in /usr/share/metasploit-framework/modules/exploits/windows/ paste this exploit file(cve_2019_0708_bluekeep_rce.rb) in the folder(rdp) and use ur metasploit skills
Also replace the files in following folders:- rdp.rb --> /usr/share/metasploit-framework/lib/msf/core/exploit/
rdp_scanner.rb --> /usr/share/metasploit-framework/modules/auxiliary/scanner/rdp
cve_2019_0708_bluekeep.rb --> /usr/share/metasploit-framework/modules/auxiliary/scanner/rdp
I think you can look at this.
apt update; apt install metasploit-framework & try again