NDS Flipnote style animations

Hello,

I am very new to Adobe Animate CC. I have made a few simple animations just to figure out the program, but now i am trying to replicate the style as seen in this video: 2 minutes of happiness - YouTube

These animations were made with a Nintendo DS game console using a program called Flipnote. This program is only available on the system. To replicate this style, i need to know 2 things:

First of all, how do i create a canvas that is fully pixel based? When i create a new project i get to choose a canvas size. But no matter what i select (I'm using 352 x 240 pixels canvas for reference) The drawings always end up vectorized. And second: is it possible to create a brush of sorts that creates the shading styles seen below?

Thanks!

Felix