Not understanding your situation. Are you saying that you erased the HP Recovery Manager app from your PC and you need a download for it?
If there was no such app on it, then installing the app will do you no good -- as it comes preloaded on HP PCs that also come preloaded with a Recovery partition. If you don't have that partition, the app will do you no good.
If what you want it to download recovery media, not the app, then read the info below on HP Cloud Recovery:
If your PC is a 2016 model or newer, you should see if you can make a bootable USB recovery drive using the HP cloud recovery tool on a working PC.
The recovery drive can then be used to install Win10 and the HP drivers and utilities that originally came with your PC.
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