Any system is only as good or bad as the people who run it. Democracy gave us a Lincoln, but it also gave us a Hitler.
Fascism on paper is not necessarily all bad. Instead of having representatives elected only by geographic districts, they had people representing farmers, people representing skilled tradesmen, and do on. This seems more attractive than having a huge number of lawyers, for instance.
But in reality it was turned into a dictatorship by Mussolini. They seemed influenced by the “Might Makes Right” philosophy, the powerful abusing the week, at home and other countries.
So Mussolini was bad, fascism itself is a separate issue. Fascism is left wing, because they believed in strong government, especially a strong national government. It’s not as far Left as Communism, but it’s Left, like National Socialism.
Fascism called for a strong leader, but not such a cruel government.