Just to add some context for anyone curious: those โcool fontsโ arenโt actually fonts at all. Theyโre special Unicode characters that happen to look like styled letters. What most people do is type their normal text into a fancy text generator, which swaps each letter for a matching Unicode symbol (there are whole Unicode blocks for this, like Mathematical Alphanumeric Symbols), and then you just copy and paste the result wherever you want it.
Thatโs why it works in chat, usernames, bios, etc. โ itโs all plain text, no font files involved, so it displays anywhere that supports Unicode. One tip: the more extreme styles (glitch/zalgo text and the like) can be really hard to read and sometimes donโt render properly on all devices, so the cleaner styles tend to work best.