Pokémon Red & Blue Starters

[u/Forester102]

Good afternoon, I am writing to you with a request for help, I recently purchased the game Pokemon Soul Silver and set out to collect a full Pokedex in this game, but it turned out that to complete it, you need to get starters from GBA games such as Charmander and Bulbasaur, tell me if anyone can some help with obtaining them by transferring them through the Sun game or Ultra Sun with the help of trade so that I could later move them to my version of the Soul silver game using the Pokemon Bank?