I have a few friends who have outlived their spouses by 40+ yrs. (and stayed in their homes)
But it only took my FIL about 2 months to be 'remarried'. (With care needs). Bad match-up...
My neighbor just remarried her 3rd husband (#1 and #2 each needed care and later died)
But... there are options (Many in some areas)
Contact senior services in your desired location.
I / we plan to be in a senior housing co-op before we need your type of care / needs.
Penney Farms CCRC (since 1927) was pretty impressive (if I could handle muggy FL).
History NEW – Penney Retirement Community
We met a lot of people (new and old residents), the place really had a 'servant' heart and so caring and many opportunities to assist and be assisted. (one of thousands of such places).
Mennonite Villages have been impressive too, but not nearly the 'community' engagement as Penney Farms.
I also visited uplandsvillage.com (Crossville, TN (central_))
and several in CA.
Here is another option.
Housing List – Senior Cooperative Foundation
This place is nice too.
https://becketwood.com/
whoops... another option that I learned from being a caregiver for disabled parent for 32 yrs...
ALWAYS have 2 separate living spaces at your home.
a) Future caregiver
b) Boomerang adult kids
c) Guests (long term)
d) Recovering Spouse (Extended illness needing assistance)
e) Needy parents (My case)
f) A small place for you, if your caregiver / family needs your BIG space.
g) Cost or 'equity' sharing room-mate. (Equity sharing is becoming more popular with retirees)
It is possible to find / house an immigrant family who is trying to integrate into community and can care well for your needs (including medical).
A farmer neighbor at our last house, bought a small house across the street for a Vietnamese family to help him with his farm as he aged. Worked out terrific for all, they were very caring for him and his ill spouse. (Including rides, meals, cleaning, farming, mowing, lawncare, repairs and plenty of outside help) All for free (reduced rents).