looks like steep landing, with a hard hit that collapsed the right landing gear, then hit, collapsed, and disintegrated the right ening igniting the fuel being fed to the right engine, continued to skid and turn the aircraft to the right which then flipped over while skidding down the runway.
“looks like steep landing, with a hard hit that collapsed the right landing gear....”
That’s pretty much what I saw.
Looked to this lay person that the flames came after impact.