Usenet still has really good newsgroups. My list:

alt.2600

alt.2600.hackers

alt.2600.hope

alt.2600.hope.announce

alt.anonymous

alt.ascii-art

alt.comics.classic

alt.comp.emulators.executor

alt.comp.linux

alt.comp.os.linux

alt.comp.os.windows-98se

alt.comp.sys.emulators

alt.computer.workshop

alt.consciousness

alt.culture.usenet

alt.cybergoth

alt.cyberpunk

alt.cyberpunk.movement

alt.cypherpunks

alt.fan.usenet

alt.folklore.computers

alt.linux

alt.math

alt.math.recreational

alt.math.undergrad

alt.os.linux

alt.os.linux.slackware

alt.privacy

alt.privacy.anon-server

alt.sci.amateur

alt.sci.physics.new-theories

alt.startrek

alt.sys.pdp10

alt.sys.pdp11

alt.tv.simpsons

alt.usenet

bionet.neuroscience

comp.ai

comp.ai.neural-nets

comp.ai.philosophy

comp.arch

comp.arch.embedded

comp.emulators.apple2

comp.emulators.cbm

comp.emulators.game-consoles

comp.emulators.misc

comp.emulators.ms-windows.wine

comp.graphics.apps.gnuplot

comp.infosystems.gemini

comp.infosystems.gopher

comp.is.linux.networking

comp.lang.awk

comp.lang.c

comp.lang.c++

comp.lang.c.moderated

comp.lang.lisp

comp.lang.misc

comp.lang.perl

comp.lang.perl.announce

comp.lang.perl.misc

comp.lang.perl.moderated

comp.lang.perl.modules

comp.lang.perl.tk

comp.lang.tcl

comp.mail.mutt

comp.misc

comp.mobile.android

comp.mobile.misc

comp.os.cpm

comp.os.linux.advocacy

comp.os.linux.misc

comp.os.msdos.misc

comp.os.msdos.programmer

comp.os.qnx

comp.programming

comp.risks

comp.robotics.misc

comp.sys.amiga.announce

comp.sys.amiga.games

comp.sys.amiga.hardware

comp.sys.amiga.misc

comp.sys.amiga.programmer

comp.sys.ibm.pc.games.action

comp.sys.ibm.pc.games.adventure

comp.sys.ibm.pc.games.misc

comp.sys.ibm.pc.games.rpg

comp.unix.admin

comp.unix.misc

comp.unix.programmer

comp.unix.questions

comp.unix.shell

comp.windows.x

es.charla.actualidad

es.charla.politica.misc

es.comp.hackers

es.comp.os.linux.anuncios

es.comp.os.linux.instalacion

es.comp.os.linux.misc

es.comp.os.linux.programacion

es.comp.os.linux.redes

es.rec.ficcion.misc

es.rec.juegos.comp.aventuras

es.rec.juegos.rol

es.rec.tv.series

gnu.hurd.bug

hispagatos.chat

hispagatos.comunicados

hispagatos.talk

linux.debian.ports.hurd

misc.news.internet.discuss

news.admin.moderation

news.admin.net-abuse.usenet

news.admin.peering

news.announce.important

news.announce.newgroups

news.announce.newsgroups

news.groups

news.groups.proposals

news.software.misc

news.software.nntp

news.software.readers

perl.beginners

perl.dbi.dev

perl.modules

perl.perl5.changes

perl.perl5.porters

rec.ars.sf.tv

rec.ars.sf.written

rec.arts.comics.misc

rec.arts.comics.strips

rec.arts.int-fiction

rec.arts.movies.current-films

rec.arts.sf.fandom

rec.games.int-fiction

rec.games.mud.admin

rec.games.mud.announce

rec.games.mud.diku

rec.games.mud.lp

rec.games.mud.misc

rec.games.mud.tiny

rec.games.roguelike.nethack

rec.humor.d

rec.humor.funny

rec.humor.funny.d

rec.humor.funny.reruns

rocksolid.feeds

rocksolid.shared.i2p

sci.anthropology.paleo

sci.astro

sci.electronics.basic

sci.electronics.design

sci.electronics.misc

sci.electronics.repair

sci.environment

sci.logic

sci.math

sci.math.num-analysis

sci.math.research

sci.math.symbolic

sci.misc

sci.physics.relativity

sci.physics.research

sci.skeptic

talk.environment

talk.origins

https://www.eternal-september.org it's your friend.