No need to flash fastboot ROM. You can flash a stable recovery through fastboot. You can download the stable orangefox recovery R9.0 from
https://sourceforge.net/projects/orangefox/files/land/
You'll need minimal adb and fastboot which you can download from
https://androidfilehost.com/?fid=746010030569952951
Install and launch it.
Extract the recovery zip and copy recovery.img file into C/Program Files (x86)/Minimal ADB and Fastboot/
Boot your phone to fastboot mode by pressing volume down + power button when it is switched off or do it from the recovery.
Connect your phone to the PC ( I hope you have USB debugging enabled in your phone).
Enter "fastboot flash recovery recovery.img" without the inverted commas in the command prompt
Next enter "fastboot boot recovery.img"
Your phone should boot into Orangefox R9.0.