If you're actually interested in learning about this, I've linked a youtube series and a few sites and reddit threads below that explain in far more detail than one single comment can. At a high level, communism is a classless stateless system which falls closely in line with anarchism in which there are no unjust hierarchies; Anarchism is a pretty sophisticated philosophy. Anarchism just means "no rulers", not "no rules." Arguably this gives MORE liberty than a democratic republic because communes can form under and make their own rules which prevents the majority from oppressing the minority. Anarchocommunist theory has been explained a LOT already, so how about I link you to examples of people who actually do better than I can.

https://www.youtube.com/watch?v=S3nxK-0CTY0&list=PLVlCbf75cne_jbxwHwSaPdT65npiGhQrr

https://www.reddit.com/r/CapitalismVSocialism/comments/jthelv/ancoms_please_explain_how_anarchocommunism_works/

https://theanarchistlibrary.org/library/alexander-berkman-what-is-communist-anarchism

https://theanarchistlibrary.org/library/petr-kropotkin-the-conquest-of-bread

https://www.reddit.com/r/Anarchy101/comments/ee7bmv/what_stops_anarchocommunism_from_devolving_into/

https://www.reddit.com/r/Anarchy101/comments/gb1yz1/would_anarcho_communism_work_on_large_scale/