This is, essentially, what we're working towards here. As little grass as possible/as much food or native flowers/shrubs as possible.
https://modernfarmer.com/2022/11/edible-landscaping-foodscaping/
We've had 3 growing seasons of transformations and have reduced about 1/3 of our lawn (a 0.25ish acre lot). Goal is for 2/3 of the lawn to be replaced by growing space, the rest retained (untreated, of course) for recreation in the warm months.
Materials to turn the lawn via sheet-mulching are mostly free. In the fall, we cover the desired area in cardboard from package deliveries or the city recycling center, followed by compost (as much as we can source on our own), and topped with wood chips delivered for free by the city. By the spring, the area is ready for planting. Compost/Mulch/Soil mix for top dressing as desired.
You can be bound to your lawn or turn it into something that benefits you and the environment - I know what I'm choosing.