You don't.
yes
it's just by luck
It is not possible to catch Mew is Pokémon Emerald version without using cheats. The only way to get it would be to trade.
You Need Cheats The Wild Pokemon Modifier.
i don't have emerald but the valuable Pokemon is rayquaza
how to get all the tickets in Pokemon emerald?
no no
You can either migrate it from Pokemon Emerald version, get it from trade, cheats, or events. :)
Without cheats they randomly appear in the wild or hatch from eggs.
As far as I know you can not.
transfer from emerald
Currently impossible without cheats.