Hello everyone !

Hope you're doing well !
I started painting & digital art through my Microsoft Surface Pro 8 + Microsoft Slim Pen 2 using Krita but I have some problems.

The back of my pen isn't set as an eraser.
And my pen seems not to be that precise. I mean, with a simple brush with a huge size, moving the pen make form like if I'm teleporting more than a real pencil.

I wonder if there isn't something I'm missing. Driver for my Slim Pen 2 ? An option in Krita ?
Does anyone have the same problem ?

Thanx you !