Ofc everyone can speak Turkish , sometimes they speak each other too .
The only places they dont do it its in army , or in big events .
The system in Greece is completely diffrennt than there , President or prime minister have less less powers than Turkey , for every decision parliament have to vote , and politicians here can disagree with the leader of their Group . So more or less voting here doesnt really affect the situation . I cant describe it at English perfectly . Its the definition of democracy , if we dont like the things , we just go outside , protest , and if enough people go outside and protest we have elections , like before 4 years .