Aside from the normal ALT + code entry method, you can also use Unicode entry to input characters (input the hex values, followed by ALT+X). On Windows OS, any program that uses the Windows Rich Edit environment will natively accept this entry method, so this means you won't need to install anything additional and you should get this capability out-of-box with programs such as Word, Notepad, etc (on Windows 11, even notepad.exe supports this feature). Personally, I would call notepad.exe through run and copy/paste it over from there if it's just the occasional use here and there, otherwise I'd look for additional automation if the use case calls for a higher frequency of use.
There are also other solutions, such as a registry key edit to enable a different form of hex inputs (this solution wouldn't work well with your issue, though, as it utilizes the numpad), or 3rd party / external applications designed for this purpose. You can also look into using, e.g., AHK to create your own custom methods to input special characters.
PS: If you happen to have a Chromebook and have been wondering how to input unicode characters on there, it's a very similar process: input CTRL+U and type the hex value.