Good luck
Susan

Stepables advertises many groundcovers as lawn substitutes. YOu might want to try out a few before you make a large purchase in case one doesn't grow well for you or you prefer the growing habit of another.

I don't like all the groundcovers and tended pots of them are different than run loose in the ground.

There should be a substitute that you'd like and you may want to install some nonplant groundcover such as rock or patio as well. Depending on how you want to use that space...

We installed a small green house & sitting patio out back as part of our lawn and then expanded with paths of wood chips and additional woodland gardens. The mowing area has significantly been reduced as well as the enjoyment of the backyard increased. I enjoy a nice patch of grass, but rarely sit out on it. I do however sit at the bistro table or the bench during nice weather. I enjoy the view of the patio daily rain or shine.

I would remove more grass in a heartbeat if it is another project like we did for our backyard.

There is a natural process called succession, that is as difficult to fight as the force of gravity.
The fight to keep a lawn typifies succession, and requires constant work, money, chemicals and mowing, just to keep the natural vegetation from moving to a climax forest.
Mulch renewal can be a once a year project.
Landscaping blocks or concrete might hold succession back for years, but even then, leaves can accumulate, rot, and succession will start.