ZD,
You say “Then there is indirect or unintential cause of Pikuach Nefesh. Lets say there is no electricity and one day you need to call EMS and because there is no electricity you cant call EMS, BUT most times you dont need to call, but the one time you need to call, you really need to call and if you couldnt call, someone might die.”
This seems to be a totally new definition of pikuach nefashos. Where did you see pikuach nefesh defined so in halacha.
You also say “When you cant walk for a week and limped for a month in pain, it was a big deal”
How does this rise to pikuach nefesh? Once you fel and were in danger that would be pikuach nefesh. But that someone should be mechallel shabbos so that you can walk outside without slipping does not appear to be an instance of pikuach nefesh. Nobody says you have to walk out side. In fact, probably you should not walk outside because you are putting yourself into a matzav of pikuach nefashos, which would be ossur.