hello.

Yes, it is possible. Check out this article: https://www.cloudberrylab.com/blog/how-to-create-bootable-iso-file-for-image-based-recovery/

Yeah,I taught myself on Youtube.
Similar video guide or tutorials can be found on Google(Youtube)
Like the iSeePassword WizISO.

You can make USB bootable by Rufus or command prompt. here I will tell you to create USB bootable by Rufus.
1: Download the Rufus latest version form Rufus official site and install it.
2: Select the ISO image file and press the start button.
3: wait some time when the step is to start it takes several minutes
4: when setup completes 100% close to the Rufus program and unplug the USB.
5: you create USB bootable easily Thanks!

Thanks for pointing that out! Hope this method helps users who are having troubles creating bootable usb using native functionality.