Heya, welcome to PC! I also used to play the game very similarly to you. Never really cared about EVs or IVs. All that changed when I decided to get into VGC a few years ago. The only shiny I remember finding on my own was back in Gen 3 when I ran into a Shiny Zubat. Never really cared that much for them. You might be able to find what you're looking for over in the
Trade Corner. Just be sure to follow the guidelines there and you should be good. If you ever need any help don't hesitate to drop me a message. Enjoy the community (: