You might consider Anarchism ironically. It’s leftist libertarian basically, and is not “no government.” It’s about removing hierarchy, which destroys freedoms of people.
I used to call myself a Libertarian too, and I eventually ended up on Anarchism.
Thanks for the link. I’m not up on the latest in anarchist philosophy. The last meaningful work I read on the topic was probably In Defense of Anarchism by Robert Paul Wolff.