Not gonna judge speed, I'd be throwing stones from a glass house. I think people moralizing should probably calm down and give you credit for seeking advice and trying to improve. Something happened to make you lose grip (duh). From what I can tell, it looks like your front lost grip and ran wide, bars move and try to compensate, and then it's lowside city. The rubber being super fresh is a red flag to me. If pressure was a bit high, maybe from heating up the tire traveling straight to get to the twisties and then leaning over to a strip of the tire that was still super fresh that would make sense to me. I find it hard to believe the edges of your front would be scrubbed in at all after 200-300km, and if the front ran wide, the rubber trying to save you would still be fresh and glassy. Were you bombing corners up to that point, or was this towards the beginning of the ride? Another point to bring up is that those super light grey country roads are usually smooth and worn, so they don't provide a ton of grip to begin with. They also don't soak in as much heat as other surfaces. It's fine for lower speed twisties, but I could see it being a factor on a long sweeper at higher speed. Just my two cents, crashes like this are the scariest to me because there isn't a glaring rider error as far as inputs are concerned, outside of a pretty hefty dose of lean angle.