The only thing I want in this world is to have a Shiny Shuckle.

Looking online how to hunt shinies is crazy. Nobody seems to agree on anything. Im playing Sword/Shield. Pls help me out.

Right now what im doing is killing Shuckles non-stop and trying to get to 500. And just have a chain of Shuckle I killed without fighting any other pokemon. I also dont have shiny charm because im lazy and the game isnt great.

Am I increasing the odds of a Shiny by killing shuckles? Or am I waisting my time.