xeriscape the front, let most of the back just grow out wild, and keep a small patch of grass in an area where you like to chill (for me this is in a courtyard)
use an old school push mower for this small patch. You get a little exercise with this, but not enough to ever stress ya, and it requires no gas, no oil, no electricity and barely ever any maintenance.
You could do what I did:
This, but native plants instead.
That’s exactly what grows out wild in my backyard here (which is against the edge of a greenbelt / drainage creek bed) - no intervention needed.
This sounds lovely