Greece wanted the F-35, but since it received the first Rafales it wants F-35 less and less, in fact it has already ordered more Rafale.
Croatia is not interested in the F-35, it is too expensive.
Abdel Fattah Al-Sissi's Egypt bought Rafales in 2015 to protest against Barack Obama's abandonment of Egyptian President Mubarak at the time of the "Arab Spring". Since then they have been very happy with them and have bought more.
Abu Dhabi's decision to increase its initial request for 60 fighter jets to 80 is a sign of preference over the Americans, as the French order is greater in number than the 50 F-35s that the US is currently negotiating with the Emiratis.
When a country is in a troubled area where it risks going to war, it prefers the Rafale to the F-35.