I understand that during the 1956 Suez crisis Egypt was defeated as it was taking on three nations at once, two of which were the Britain and France, much more powerful nations than any Middle Eastern nation at that time, but why did the Arab and Muslim states, oftentimes banding together, lose these subsequent wars? As I have seen in my reading, it was an embarrassment for the Arab states as they were always far larger in fighting numbers and possessed then-modern and highly capable Soviet weaponry, and yet they were unable to stop the Israelis from capturing the Sinai, occupying the Golan Heights, advancing near Cairo and even shelling Damascus. It seems that they were unable to meet them on the battlefield as equals, and it doesn't make sense to me why they couldn't.
Here's a detailed post about the Six-Day War from this sub
And here's a thread from /r/CredibleDefense with some further critique of that post
In general, you might take into consideration the differences in intelligence, logistics, and training, all of which are critical force multipliers. As a current example, the Saudi Arabian Air Force has been described as basically unfit for combat against any real opponent, despite having top-quality American equipment.