I got one at Home Depot that is a good height for me. The one in my sewing room that is where my machine sits is too low and makes my back hurt when I use it too long. The one I mentioned is higher, folds on both sides.
I'll see if I can find it for you so you can look at it.
Here it is:
https://www.homedepot.com/p/Sew-Read...3374/305335268