A drawing tablet helped me some, when I paired it with Xournal++. I think there are apps for iOS and Android tablets with nicer and faster interfaces, but I don't use tablets, so they didn't help. But the ability to quickly select a group of pen strokes and just move them around to make new room, as well as the ability to quickly paste screenshots of anything I was doing anywhere else on my computer made a big difference.

i bought a remarkable tablet for that purpose but still failed to adopt it.

Yeah, the Remarkable looks like the most likely candidate to be able to displace a sheet of paper but my hangup is that the lack of colour will hinder its usability too much for me. I always use a few coloured pens when I scribble my notes.

I went paperless this year as an engi student with dendron, xournal++, a (used) wacom tablet, and some pdf editors. The main benefits were avoiding scanning, instantly being able to reorganize or copy/paste diagrams, and not having to carry notebooks. Pencil or pen and paper still feels the best but in order to keep everything digital, this was reliable and cheaper than an ipad or tablet. https://alternativeto.net/list/34598/paperless-student/