Concerning the OP. There may be things the cyclist, hit by the bus, could have done differently, such as take the lane, that may have reduced their chances of being hit. But in the video, it's clear the bus driver is 100% at fault. There simply is no excuse for that. The cyclist was clearly visible, even in a video, for quite same distance.
I don't care if the situation requires the bus to come to a complete stop. There's simply no excuse for hitting anything that you can clearly see that isn't somehow darting out in front of you. Slow the heck down, negotiate the situation safely for all involved.
While I hold little hope the bus driver will get any serious punishment. I'm sure they are already saying, "I didn't see them". If you're that clueless, you should be locked away for the safety of everyone else in the world.