No. Garena allows emulator players to use keyboard and mouse. However, you will be matched only with other emulator players. A key mapping file simply remaps keys; it does not modify the game or give auto-aim.
Once imported, select the new scheme from the dropdown menu and click Save . Recommended Professional Key Bindings
You can find structured mapping tables and example configurations on sites like Scribd , which lists common key assignments for movement, combat, and survival. How to Import the File into BlueStacks 4
Official key mappings are built into the emulator, but for custom configurations, community platforms are the primary source: