Wraith and Leatherface are easy to learn and effective early on. Hag and Billy are the best pubstompers, once you learned them.
But play whoever interests you, this is not a competitive game.
I am a solo Q survivor main, but I dabble in killer. Killer is absolutely the harder role to play, but at the beginning it’s way easier. Survivor is way harder at the beginning and easy later on.
My two favorite killers to play against are Nurse, and Huntress. Absolutely so much fun! As a killer, Huntress is my favorite to play currently.
Deathslinger if you have played shooters and know how to aim it's pretty simple to down a survivor with him as he technically removes windows from the game and even some loops (not all but most)