can you not also say 'duo arkadaşları ile maça gidiyor'? I thought that you can eıther use arkadaşlarıyla or arkadaşı ile, but ı am not sure
you can; ile forms are not used much though
"Duo maça arkadaşlariyle gidiyor" why is that incorrect
Should be arkadaşlarıyla, otherwise it seems ok to me. If I've understood correctly, this version would stress the fact that he is going with his friends instead of going alone or in some other company. Correct me if I'm wrong.