As I have already argued in my previous video, you should not use Roam Research (this video is pretty controversial, most dislikes hehe).
And I have introduced an approach which is like top-down method, where you get what you need in an app into what market has to offer (not, in contrast, the act of seeing apps and see whether this can fit your need or not. I have talked about it here.
If you have watched the previous two videos, then watch which app to use for notetaking.
Cheers! Happy notetaking!