Fascism is a form of far-right, authoritarian ultranationalism characterized by dictatorial power, forcible suppression of opposition and strong regimentation of society and of the economy which came to prominence in early 20th-century Europe.
Other than the definitions always include the term "far right" the description sounds just like our left.
All forms of socialism wants to subjugate the private domain as they feel the public/collective/state/union/corperation/syndicate and so on should control the means of production.
Socialism has a major schism between international and national but from their they have forther breakaways of how to accomplish it and on behalf of who.
Just like Christianity has 100 of different version but they all have a core belief.
It’s all a form of Hegelianism
Who hated individuality and espoused authoritarian collectivism