
Remember to always check the license if it's okay to use for your purposes etc. There are multiple sources for this, free fonts and paid options. As you can see, Arial supports the Naira sign (which is why it renders for you). ' link on the page of the character for a suggestion on fonts that support those characters. For example, here's the Naira sign (the starting letter of the Ninja Predator example).

You can find the Unicode representation of those characters at. You might need to learn which characters you actually need first.

Prepare a font that contains the characters in question.You seem to have a bunch of font assets prepared, so perhaps you already have the fonts that cover these characters. TextMeshPro only uses the font data that you provide it with. So it should not come as a surprise that Arial would not cover all those special characters that you're showing in your example. (I think there have been attempts at some sort of universal fonts but mostly it's incredibly difficult to have one font that works across, well, pretty much everything from Arabic through Latin to Hebrew and Emojis :D). First, you need to understand that every font can only display a specific parts of the whole Unicode spectrum of characters.
