I don’t have Linux on a tablet right now but my first thought was that you might want to check into what Steam Deck users are doing with “Desktop Mode.” It has a touchscreen and virtual keyboard so it’s essentially a tablet-like experience (though it has touchpads and a few buttons, obviously, and isn’t a tablet). It runs KDE by default, which I’m not as familiar with as Gnome, but it might have more users than any other GNU/Linux touchscreen product.
Last time I had a Linux tablet, there were also some Firefox/Chrome/Gnome extensions that made it more touch-friendly. Like instead of selecting text, one finger swipe scrolled, two-fingers zoomed in, etc. like a typical tablet. Not sure if that’s still an issue. But if you do run into an issue, it might already be solved by an extension.
Hopefully, someone has more up-to-date advice. The tablet I had (and probably still have in a drawer somewhere) was an experimental Ubuntu Touch device and there’s been huge strides since then.