Your looking for a place with plenty of passionate like you ? You can find here most of the forum/discord server I'm using.
[Reddit] r/crypto Reddit main sub for cryptography. You can ask questions, find recent plublished paper and chat with the community.
[Reddit] r/QuantumComputing Of course Reddit have its community for QC. Here you can find a lot of interesting ressources, ask questions and chat.
[Discord] Cryptohack A wonderful community of cryptographers, you can ask for help, follow the news, share memes and a lot more!
[Discord] Research Reverse engineering communauty and CTF team ret2school.
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