Red Dead Redemption cheat codes, how do you enter them?

In Red Dead Redemption 2 you don't type them in, you go to the pause menu, settings, cheats, then enter the phrase. Most of them only work after you've found them in a newspaper or another source in the game. Any cheat disables saving and achievements while it's active, so turn them off before you want to save. In the original Red Dead Redemption it's pause menu, options, cheats, enter cheat.