Piñacolada

Thank you guys. Since I don't know how this really works tell me what to do.

I just started the game a few days ago and I'm loving it. I'm looking for females Vulpix, Alola Vulpix and Larvitar since I've never tried them and they are obtainable too late in the game for my taste. Since I'm new, they only thing of value I have is a shiny Pikachu from the event which I was using.