I never worry about power outages much, they generally don’t last that long and with a gas range and a kero heater I can easily provide heat. The garage also has a wood stove in it and I could move out there if I had to for heat. The last big power outage that killed power to 50-million homes all over the north eastern seaboard originated with my electric company (Toledo Edison) but even when many were without power for days, we were only without it for a few hours (I think it was 3-hrs)
A home fire is a concern, but with care and fire extinguishers at the ready it’s a minimal concern.
Gasoline shortage is not something I worry about or plan for too much other then a tank of gas in the van and an extra 5-gal can. I don’t want to store more then a few gallons for emergency use. I think it’s best to prepare for this by having enough supplies to weather short term shortages. Long term fuel shortages would probably mean a much more drastic economic collapse. This could lead to a loss of all the supplies we use as a society. I think having supplies of food, a way to make drinkable water and a way to cook on hand can really give a comfort zone for this. I suppose hunting could supplement your food supplies, but a lot of people will think this and the woods may not be a safe place with large numbers of hungry people with little firearm experience wanting to shoot everything that moves. Probably better to stay out of any woods.
A riot is a possibility, we had a small one a few years ago when the Nazi party came to Toledo and had a march in an inter-city neighborhood. My brother is a county sheriff and was on-scene during the riots. They were told to stay on the perimeter and keep out of the rioters way, let them do what they want to do in their own neighborhoods. Don’t shoot anyone and cause an incident. The Nazi demonstrators were not the ones rioting, but more the ones stirring the pot.
Violent crime.
I try to avoid areas where it generally happens. But a firearm is the answer to this in an extreme case, but it’s always better to walk away then to shoot. Many times just allowing a gun to be seen can defuse a situation. I agree with being aware of your surroundings can be the most important thing here.
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You can run, but you'll only die tired.