I have similar kinda story and thats how Journiv was born: www.journiv.com/blog/the-story-behind-journiv

I wanted to capture all the stories/thoughts behind the pictures to some day maybe pass it down to my kids but I didn’t want to put all this info on some third party server. I looked a lot for self hosted journal kind of solution but didn’t find anything beside note taking apps (plenty of them). So finally decided to take matters in my hand. Immich integration was a primary use case for me so everyday/week I can add snippets notes to pics to keep memory of those pics and what I was thinking, what was happening, what did the kid said/do etc etc.