I'm going to leave the obligatory "Org-mode better" comment that inevitably pops up on these posts. I used to enjoy Notion. But it's closed-source, tiered and feature-limited, needs internet, and runs like a sloth.

If what you need is a collaborative environment, Notion obviously wins. If you need a first-class mobile app, Notion wins. If you don't check either of those boxes, Org-mode is awesome. Genuinely one of the coolest "pieces of software" (I'm growing to hate that phrase) that I've ever used.