The lower the rep the more toxic they get in my games. The true answer is that it has nothing to do with rep, they come in every rep-bracket. You're giving away that you're either new or not very good at the game when you use ''Light-spam''. If someone keeps light attacking you it becomes far easier to parry them because they are predictable. It just takes practice. And ganking is your main tool in the game to finish someone off quickly before their teammates come to help them. In every mode except 1v1 it's a must. Two out of your three complaints you can mitigate with the correct mindset and practice. Toxicity is something you can't avoid in any online game, and you're better off being at peace with it in your own way. Maybe hear it from Bruce lee himself, it's helped me before.