1. Route 46 (Grass): This is the most common place to find Scyther. It appears in tall grass and has a 5% encounter rate. You'll want to make sure you have a Pokemon that can learn moves like False Swipe or Thunder Wave to weaken Scyther without taking it out.
2. Route 47 (Grass): You can also find Scyther in the tall grass of Route 47, though it has a slightly lower encounter rate than Route 46.
3. Using a Shiny Charm: This item, found at the Goldenrod Department Store, increases your chances of encountering a shiny Pokemon, which includes Scyther. This won't increase the encounter rate of Scyther, but it will increase your chances of finding a Shiny one.
4. Trading: If you are having trouble finding Scyther, you can always try trading with another player. There are many online forums and websites where players trade Pokemon.
Tips for catching Scyther:
* Use a Poke Ball with a higher capture rate: Ultra Balls or Great Balls are recommended for catching Scyther.
* Use a move to weaken Scyther without taking it out: False Swipe is a great move for this purpose. Thunder Wave can also be useful to paralyze Scyther.
* Use a status condition to your advantage: If you can inflict a status condition like sleep or freeze on Scyther, it will make it easier to catch.
* Be patient: It may take several attempts to catch Scyther, so don't give up easily.
Good luck catching Scyther!