You then place them on top and concrete underneath.
Nevertheless, I don't think the material quality will hold up when the wind picks up and the panels are drawn into the fence.
Unfortunately, they lie on drainage concrete. In retrospect, quite a few things went wrong.
No matter whether it's a double bar mat with PVC or, for example, a WPC privacy fence – the problem is always the same, isn't it? I'm just wondering whether it might at least be possible with a mesh foil. It is slightly permeable to wind. Alternatively, with wooden slats and about 2-3 cm spacing between each slat. The neighbor has that as a back "wall" to his carport, and it looks quite nice too.