Leftism is to go against the current class order, Liberalism supports it. Leftism isn’t an arbitrary vibe, if you’re pro-Capitalism then you aren’t against Capitalism!
Leftism isn’t to go against capitalism though. Leftism broadly refers to the ideology that supports socioeconomic equality. If I’m to remind you of the origin of the terms “left” and “right” as it relates to politics, the terms right and left refer to political affiliations originating early in the French Revolutionary era. “The Left” implied support for republicanism - becoming a republic, and not American republicanism, secularism and civil liberties.
Political scientists and other analysts usually regard the left as including anarchists, communists, socialists, democratic socialists, social democrats, left-libertarians, progressives, and social liberals. Movements for racial equality, as well as trade unionism, have also been associated with the left. Source
The sort of leftism you Marxist-Leninists advocate for is radical leftism. Social liberalism is still leftist.
Leftism broadly refers to the ideology that supports socioeconomic equality
Then by your own definition Liberalism is right wing! This is ridiculous.
Neoliberalism IS right wing! The contemporary “Liberal” is pro-war, anti-worker, and thinks leftism is a Foucauldian atomization of the workers by identity, a strategy that was literally seeded by the CIA as an anticommunist strategy (how do you think Foucault became universal in Western university curricula?) If you do not have class solidarity, you are not “left” period.
You think communism is the only way to advocate for socioeconomic equality?
Edit: This is a dumb question of course you do. Read the source on political scientists agreeing that social liberalism is leftist. Go ahead and disagree if you want
