There's a youtuber you might enjoy, who focuses on CPTSD. She's called "Crappy Childhood Fairy". She has a community called "the Daily Practice" where they all journal together. You might enjoy checking it out, it seems a lot less "toxic positivity" than the one you mentioned. :)
Written by Reverie
“The nature of our immortal lives is in the consequences of our words and deeds” — Cloud Atlas