Oof, that's gonna be a no-go for me. Though Termux is on Android, and actually is a variation of Linux, it's a very hacked distro, as it doesn't have access to the true / root folder, everything is stored in /data/data/com.termux/files/
So, every single program for Termux has to be modified and recompiled accordingly to comply. At least most mainline programs and packages are available and maintained, apparently lue isn't available, and I ain't in any hurry to modify and recompile it myself, but I probably could, if it was necessary.
I've installed Okular though and that works fine, plus pdftotext works fine in the terminal as well.
Thanks for the response and advice though 👍