I had a similar experience. Mainly wanted to do stuff with R and LaTeX, and doing workarounds to view plots gets tired fast. Didn't help that my Mac Mini I was connecting to would often lose WiFi but not auto-reconnect (no wired option where I was living at the time). What's super depressing is my $80 Kindle Fire is a more capable device thanks to Termux+X11 server despite being multitudes slower as you can do everything on the device.
Maybe. IDK. I typically think of those as a Python thing and personally I was never very fond of jupyter notebooks so it's not something I thought of. For LaTeX I bought TeXpad which is okay but you sometimes needed to access their cloud servers to compile with certain packages. iPad is a very workaroundy workflow for coding.
