Maybe this will be more of a personal rant sharing my experience than a developed thought, there probably are places similar to that but pardon my ignorance, I would love to know if there is something similar. Maybe it could help someone who's struggling like I am.
I've been looking for places to get to know people and talk more despite being awful at it, I do want to make connections and have deep friendships, so I've tried many places online.
It's very hard to reach out to others and share your life, I struggle joining calls and texting (even chatting in streams), I know some people feel more comfortable talking to strangers, but I've only felt that with anonymous chats, which usually have a lot of weird people if they're not well moderated (which most aren't).
Then there are online communities, like discord, with which I struggle a lot getting into, feeling like they're already full of people who know each other, It's like I'm an intruder, but I still try to text, voice chats though are something else, I can't imagine joining a conversation people are already having, specially if there's no motivator (like work), that said I never got into a community, or felt part of one (exceptions to friendships irl that I made because of work or the university)
There is a website that called my attention, Wusoup, it's very chill with a strong moderation, no dating involved, I think that keeps the weirdness away, and that works for the most part if you're comfortable chatting and working on a conversation, I haven't had luck to make a connection yet but it was much easier meeting and talking to people, but it's still mostly a platform to chat with strangers.
But in all of those alternatives I have yet to find a place that really feels inviting just to be yourself and to share things that make you worry or struggle with, things that are usually said to a close friend who you've been talking to for years or to a partner. There is this game on steam that gets close, called Fireside feelings, you can share a deep thoughts about a certain subject and also read what others have said, but it's asynchronous so it's more like reading stories, it's nice but lacks personal connection from a real conversation.
I think somewhere perfect would be something anonymous at first, that reinforces more thoughtful messages (not just typing M or F ffs), maybe one on one, they read each other's thought and then develop on it, maybe it's regarding a similar idea, nobody feels like an intruder, nobody knows each other, maybe there could be a chance to become friends or maybe even make groups if more messages are shared together, maybe there could be voice chats clearly open for new people, it could have motivators as a goal.
In real life I see a similar issue too, most social places either involve partying or alcohol or need to be paid monthly, like lessons, and I don't see parks or a library or a cafe as a space to talk, people don't usually go there to meet other people. Of course you can strike a conversation anywhere; what I mean is a space that has that interaction between people in mind, specially nowadays, everyone is so focused on their phones, I just wanted to go to a place (online or offline) where I could sit in a random table knowing that everyone there is also getting to know each other, maybe playing a game or doing a sport; I think that's what happened more as we were kids and we don't see much more of as adults.
TLDR: Places for socializing don't feel very welcoming to someone with social anxiety or difficulty making friendships and don't allow deep conversations from the get go.