By the way, Yemenis pronounce the hard ? wrong. Like Arabs.
? is supposed to be from the palate, G (like the soft ? which they do get right, indeed, GH), not the teeth
And nobody pronounces the ? correctly, which should be a J and soft ? should be ZH.
The English RR is the best substitute, and the best pronunciation of ? that exists today, because at least it comes from teeth, like supposed to.
But, ya, should be J and ZH. They are 3 Reshs, you know that, right?