Wow that was quite harsh Demon,
Now Akane, if I were you I would focus on the easy catchable Pokemon that way it takes less time, and your getting new strong Pokemon while you are doing it!
Just walk around and look for any Pokemon, that does not have a Pokeball by it in the wild which means you haven't caught it yet.
Or better yet, if you haven't already go to Celadon City and in that one Building go through the secret entrance in the back, walk up those stairs and take the Evee!
And use a fire, water, or a electric stone to evolve it.