It really depends on your legal jurisdiction

If you say it out loud and it’s recorded you might be able to claim it was a heated gamer moment or out of context or something and you didn’t mean it

If you said it about some public figure, there are probably a bunch of people who said it before you.

If you said it about your neighbour or that dickhead in your drone racing club, that might be hairy and you should probably go to a lawyer with that

For the most part, legal systems are more concerned about the actual murderer and you probably don’t have to worry

it’s considered good etiquette to not openly wish death on others out loud. Don’t make lists. Don’t make it a mantra.

I’m not a lawyer, obviously, but I don’t think they’ll slap you with a murder charge in most circumstances.