so, I recently got into speed running cycling, and I'm watching them hug the wall, as well as drifting, I tried using my brakes in certain patterns, but it seems like it's impossible! Help!

yeah i also dont really know how to use the brakes but like, feeling out where the track wants you to go and hugging the track limits is a big deal, so get a feeling for that and you'll be pretty well off probably

The 'drifting' or 'power-sliding' as it's better known as, has nothing to do with hitting the brakes. The best way to power-slide is to snap the front of the wii remote & nunchuk left or right before a sharp turn, then begin boosting as you enter the turn.

Also, I find steering and power-sliding to be easier with 'Sensor Bar Assist' turned off (you can access this feature via the settings on the bottom right of the sports menu).