I honestly as surprised to see how much you did with the walljump, it's really one of the things you'd advertise with all the options you have out of it, but it's a bit jank.
If you hold left or nothing the push back toward the wall is immense, nor do i feel nuetral in the air has to stop you that much (i mean it seems to even push you back slightly more than left, sheesh), and if you aren't holding the direction toward the wall, you fall down, even if you're holding neutral. At the moment this means that you have to switch directions as soon as possible, or not be able to make it to the other wall at a decent height.
tldr reduce air friction and make neutral not detach you from the wall