I tried to make a bootable usb from an original Lion copy…
I'm not sure what that would be since Lion was the start of Macs that shipped with no OS on physical media. Only for a limited run did Apple relent to demand and make it available for purchase on a USB stick. Those are not easy to find.
Apple's page of instructions for creating USB installers for various releases only goes back as far as El Capitan. I don't think earlier versions included the embedded app, createinstallmedia, to do that with those instructions.
DiskMaker X was a very popular app for creating bootable install media. It's still available, though I haven't used it in a long time. It says that it does run in Catalina, but I have no idea if it will still work to create a Lion installer. But you'd have to first have a copy of the Lion .dmg installer. You still have to buy it for $20 from Apple.
If, by an "original copy", you mean you already have this Lion .dmg installer, then I think DiskMaker X should work.