If you cannot trade from Pokemon firered to gold then how to catch all Jhoto Pokemon?

Answer 1

johto PokemonJohto Pokemon mostly appeared in FireRed or LeafGreen, but they appeared in Pokemon Ruby, Sapphire and Emerald.You can search for wild johto Pokemon in Sevii islands after beating Elite four. For Ruby/Sapphire/Emerald more johto Pokemon appeared after beating the Elite four and go to the safari zone extension area.For the Johto starters, you can get them after compelting the hoenn pokedex in Emerald,and deoxys is on the list. if you want all the Johto starters you must trade them from your friend who has completed their pokedex and choose different Johto starter. If your friend don't want to give their Johto Starter you may ask them to breed the Johto starter with ditto and if the egg hatch you may ask your friend to trade the Johto starter or the baby Johto starter
Qwilfish, Murkrow, Dunsparce, Hoppip, Sentret, Larvitar, Unown, Delibird, Marill, Swinub, Yanma, Wobuffet, Natu, Entei, Raikou, Suicune.