As a recent switcher to macOS, there are so many of these that are standard on either Windows or Linux machines. For the scrolling issue, I installed LinearMouse. I was originally using the Logitech software for this, but that would sometimes consume massive amounts of RAM, and the final straw was when they added AI to the mouse driver.

Another one was the ability to control volume of each app separately. I ended up buying SoundSource to fix this, which includes some additional useful features.