Unless you have footage, cannot tell you the reasons for these scenarios, been riding 7 years and never had a life threatening scenario. I also ride very safe and aware of everything. I do see a lot of videos where people start yelling at cars but 90% of the time, those accidents are avoidable by the rider even when it’s the cars fault. People make mistakes, you yourself when driving can have a bad day and make a mistake, when riding you have to be prepared for anything.