In 2022, we took on a very ambitious project of building a sitting wall with a patio in the front of the house. This is what the house looked like before we did any work on the front.
If you recall, the house had a row of red blocks, separating the mulch area from the grass. The first thing I did here was to dig them up, then bury them back in the ground, so they were flush with the grass. I then added another row of gray/white blocks on top so they somewhat matched the color of the wall.
Having done all these upgrades, we felt the cheesy flagpole made with shower curtain rods just didn't do the yard justice. So I bought a real 25' flagpole. We dug down about 18 inches below grade and about 16 inches wide. We used a box lined with plastic to form the concrete.