Cheating is discouraged in video games. Using cheats can ruin the fun and challenge of the game, and can sometimes cause glitches or errors.
Instead of looking for cheats, I recommend exploring the game's mechanics and figuring out how to navigate the world naturally. There are many ways to get around the region, such as flying on a Pokémon, using the bike, or finding hidden shortcuts.
Focus on enjoying the game as it was intended to be played!