Socialism isn't that hard to market to the working class.

"We will bring democracy to the workplace, which is where you spend the majority of your waking life." (Marketing the idea of transforming all businesses into worker cooperatives in a way that's relatable and easy to understand for the layman)

"The government will have a universal safety net available for all who wish to use it, and that will include taking care of all basic necessities, including a universal basic income, shelter, utilities, education, and food."

"It's not your neighbor who has no money and no power who has been causing all of your life's issues, but the wealthy elite, who hide behind their piles of money and their propaganda machines and try to tell you how to think and who to blame for the issues that they caused."

The issue with socialism in the past has been that the wealthy elite are very good at coopting social and political movements across the globe, and often times they go unnoticed. The "left" in modern day, western countries are still inherently capitalists who don't truly believe in the above idiology, at least not in full, which is why they continue to fail to deliver the necessary solutions to prevent fascist uprisings.

Fascism comes as a direct result of three things: a top-down divide and conquer strategy, mass financial hardship, and lack of a proper education system that extends equally to all of society.