The Italians were the best “allies” we had. The Germans kept having to try fighting their battles. Because of the Italians getting routed in Greece and the Balkans, the Nazis had to bail them out there, which delayed Operation Barbarossa by a crucial six weeks.
The Italian army had out of date and worn out equipment.
Their navy mostly had to stay in port because their only fuel was what they could beg from the Germans who were short themselves.
Italian air force torpedo bombers had some spectacular success considering how small they were.
Late model Italian air force fighters were pretty but few in number and spare parts were always a problem.