Hi Tatyana - you're in the right place!
Nostr works very differently from the other social media apps (in fact, nostr isn't technically an app at all, but probably a conversation for another time). Everyone is in charge of their own content moderation and curation. You can say whatever you like! Out of courtesy, the community generally asks you tag anything NSFW as #nsfw. But all we can do is ask 😁
Here is a great getting started resource: https://nostr.how/en/get-started
Welcome to freedom