I store data all over the place.
I have Evernote for long book notes and tracking financial data.
I'm using notion right now as my base of notes for learning how to build a cabin (toggles and embedding videos is wonderful).
I tried to really use roam and its off-shots for a while but could never really get into it.
And i use a new txt file all the time. Anytime I don't know what I need or going to do. And 90% of the time, I never look at them again but they're all in my one synced folder.
At the end of the day, I keep thinking I'll settle on one solution but I'm doubtful that's ever going to be true.