Dear Everyone, So I am training my Pokemon but I don’t know is there only fighting npc can be the best way to train, please say some more ways to train pokemon faster.(edited)
Depending on what generation you are training in there are several ways to do so. In gen 3 I find that battling all the Veteran NPCs as well as the higher level trainers in each city give a lot of exp. Things like quests and challenges can also help you out in all generations. If you don't want to battle NPCs you can also train in places like Icy Plains (Snowtip in gen1, Snowick in gen2, and Sleet in gen3) in each generation because higher level Pokemon tend to spawn there based on your trainer level. Those are a few options I use to level up my Pokemon fairly easy.