My cousin gave an old acer switch that she wasn´t using, its extremely underpowered with 2gb of ram, an old atom and 32 gigs of storage. I tried ubuntu with gnome because thats what i use on my main laptop and while it has amazing touchscreen support it barely runs. I then decided to try lxqt and it runs great but the touch support is really bad. Does anyone know a DE with a good balance between performance and usability? xfce doesnt really seem to have good touch support either and tbh i really dislike it.
The idea that plasma is very heavy weight is an outdated one. You should give it a try.
https://unix.stackexchange.com/questions/359051/what-are-the-system-requirements-for-kde#:~:text=By connecting the pieces of,Integrated graphics (GMA 3150)
You should try reading again, including the part where I indicated “it’s my go-to desktop” (as in, what I use in the majority of machines).
I also have an old acer with 2GB of RAM. While it can run KDE, a standard install with such will not run very well. Been there, tried that.
(Also, if you read the article even the dude mentioned apparently moved to XFCE)