You can't, theres no way, Ive tried
Were Can You Catch Dialga In Pokemon Indigo Online Game?
Can't think about this game...Why do you like it? What is a reason?
I like games, where you should your brain, where you can improve yourself (logic, for example)
https://slotstory.com/slot-catalog/mustang-money/ try it, maybe you will like games like that
You have to beat every leader, and get every gym badge. Then, go to Olivine City in Johto Leaders map and walk around. It'll be around Lv.50, but remember, GET ALL GYM BADGES FIRST! Or else it won't let you fight it.