That sounds horrific. When I biked a lot recently the worst I got was a water bottle thrown at me and shouts intended to startle me to fall down

You're being downvoted but I've observed this behaviour. I had a colleague who had multiple dash cams because truck drivers kept trying to drive him over when passing. They thought it was hilarious, they don't seem to care about whether or not the person will be killed.

I was shocked coming to Germany and seeing cyclists not constantly being attacked by the general public. In the UK it's seen as totally illegitimate.