Firstly, please note that this is per week not per day.
That high August spike is ~40 views a day.
Secondly, reddit.com posts and certain jams can help a lot.
I used r/GameDeals, r/itch.io and r/GameBundles
Be careful though:
r/GameDeals: Limits to once per month, doesn't work for free games.
r/itch.io: You can't directly advertise, as it will do NOTHING.
r/IndieDev, r/gameDev, r/gaming: DON'T USE. They don't do anything unless you have a AAA game.
r/GameBundles: You need a bundle
You want a high general vistors and a low general post rate for any site you use. Low site visitors won't give enough traffic to posts, and too high general post rate for sites will lead to post burial. It definitely takes a few trys to get right.