sanctionedsuicide.net or 8ch.net/suicide/index.html.
There are also google groups like #ctbtalk but I wouldn't recommend it for security reasons as you would need a gmail account to join. Also, I would use Tor and/or VPN when accessing these suicide sites.
You can get free VPN over at Proton
You can download tor browser here
I made this http://127.0.0.1:43110/1tA1kbYmvY2UDrPwqwT8Xf5KxTGRntxtk/ a zeronet forum specifically for SS
to access you will need the zeronet client http://zeronet.io which is invulnerable to be taken down due to it's decentralized nature
I have Opera browser's free built in VPN (upgrading to ProtonVPN soon) and an ad-blocker for all social media. They don't have shit on me son, the worst I get is ads for the Ukrainian version of EBay.
People that are guilty of wrongthink like us need extra protection.