Ouch, on your aircraft - hard to see so much of your life trashed.
On the noseover - is the kinetic friction of aluminum on concrete (or asphalt) lower than that of AL on grass? I don’t know. Of course, one ditch, and you WILL noseover.
Always land WITH the furrows...
Ditto the furrows
As to friction on asphalt vs grass, not sure, but I think the prop is the issue.