Note taking app that I can link between my laptop and phone ? - SLRPNK

Hey everyone, I’m trying to replace most of the private owned app I use by FOSS ones, and today i’m pointing at notion. I just use it as a way to organize my notes and use it both on my laptop and phone, and i’m looking for something that can have that fonctionnality. I’ve already looked into a bunch of foss note taking apps but I didn’t see any that could do it. (maybe i didn’t look hard enough tho) I’m willing to use syncthing or smth similar if needed. do you have any recommendations? anyway, have a nice day and thanks to everyone making the internet/softwares more libre and accessible!