Let me explain life expectancy (LE). It's not understood by many posters. LE is the point at which half of a given population at a given starting age will have died.
LE at birth is 78 in the US. That means that 50% of children born today will live to see age 78.
As you live longer, your LE increases because you have survived illnesses and accidents that killed some of your peers over the years. The following is from the 2019 Social Security Admin Actuarial tables.
LE at 65 is 18 Male and 20.7 female.
LE at 78 is 9.5 male and 11 female.
Further, these are for the average person. Your LE is higher if you are female, white or Asian, college-educated, white-collar professional, non-smoker, not obese, or have above average income. There are online calculators that will factor in these variables and estimate your remaining life expectancy.
Now, for nursing home patients, these numbers are significantly different. I didn't look it up, but LE of a person admitted into a nursing home is less than 2 years. In fact, a very significant percentage will live less than a year, but I don't remember the number. You could look it up. At any one time, there are approximately 2 million adults in nursing homes in the US. Again, I'm doing this from memory... it's between 1.4 and 2 million, IIRC.
https://www.ssa.gov/oact/STATS/table4c6.html