2018 Honda Odyssey forward collision avoidance problems

I was involved in an accident with with my family. Pregnant wife and daughter. I got into a front end collision and I was at fault. The forward collision warning didn’t activate, Neither did the automatic emergency braking. This system has never failed on me and car has always stopped every time..

When driving with the adaptive cruise control on the vehicle frequently abruptly decelerates while trying to pass other vehicles. It does not matter if we are behind the vehicle we are trying to pass and pull out in the left lane, or if we are always in the left lane and just approach the vehicle we are trying to pass while always remaining in the left lane like on an interstate. Our vehicle is always safely in our lane and doesn't come anywhere close to the vehicle we are attempting to pass.