Sorry, not gonna get much help here, people here like censorship and mods banning trans people for “leaking conversations.” Free speech is generally seen as being for Nazis, despite the nazis actually hating free speech just as much as they do but for different reasons.
Basically your only option is imageboards like 4chan and 8kun (or whatever 8chan rebranded to.) 420chan is dead, so is 7chan iirc, and 2chan is still Japanese.