I've been wondering about this.
I think support is vital as we go through it? Or is it one of those things one has to confront alone.
For my part I don't believe we are meant to go through anything alone. Ideally as kids our parents are there for us when we need them and so we learn to be there for ourselves and thus never really "alone," but at least able to support ourselves. Unfortunately so many people
didn't have supportive parents and so we never learned what that "safe place" is like so we can't be that for ourselves until we do. In that case a friend or a therapist, I believe, is needed. And when we don't have that, we come here.
I try all those exercises and stuff not working for me
Going along with that I think that if you try and exercise or do deep breathing and meditation, those are ways to "get in touch" with that secure base if you have it. If you don't have it, then IMO you need to find a way to connect with other people to create it. For me, since I just have therapy once a week, I go to spin class as often as I can to make it between sessions. It's perfect for me: I don't have to talk to anyone, but I get to move in sync with the music and everyone else in the room. It makes me feel connected and alive without having to be super vulnerable. As an added bonus it seems like cardio is the cure to brain fog, for me anyway.
For other people that might be yoga, or martial arts. It could even be meditation and deep breathing but I think you need to find a group to do it with. At the very least it can just be a Youtube video of a practitioner you like, or maybe someone on an app like Calm. Most therapists should also be able to guide you through those activities. Bottom line I think it has to involve either (A) talking about how you feel, (B) getting in touch with your body, (C) getting in touch with your senses, or (D) moving your body (or some combination of those).
Humans are social creatures. Never in our history (no matter whether you believe we evolved or were created) have we succeeded as individuals. We are hard-wired to need others until and unless we can learn to be there for ourselves.
And if you absolutely really cannot bring yourself to do an activity or call a friend or see a therapist, many countries have helplines. In the USA it's 988.