In my experience Notion is too slow, especially with more than a few pages. I used to use it (I actually still have an unlimited pro membership for free since I was a beta tester several years ago) but nowadays I stick with Markdown and git.
I think the personal tier is now free to everyone, not just beta testers. I think the slowness issues got fixed a while back - there was a point where they were releasing new features weekly, and then basically nothing happened for 6 months, and then the next few releases fixed a lot of 'under the hood' stuff with performance and search and so on.
Still a great tool, I moved away from it for personal reasons, but I very much like it still.
I'll have to take a look again then. My account seems to be the organizational one but it's somehow still free for me instead of the X per month it should be.