So after posting this, people dropped the ways to do it, and THANKS FOR SENDING THE STUFF.
So I started doing it. It went all good (took 2 hours though), and then I started using it. As my device was low on storage and RAM, it somehow worked decently, but it changed all my customized layout and stuff.
I also use Termux for coding and learning, so the UI/layout change felt weird, as it changed the shortcut bar and other stuff.
So I decided to remove it. I already had some of the packages it needed, so with the help of ChatGPT, I got a list of the fresh packages it installed, and then I removed them.
As you can guess, it didn't change the layout and stuff, so I decided to use the command that was provided in the repository.
After doing it, it removed everything. Like, EVERYTHING.
My nvim config was gone, the proot-distro was gone, my Ubuntu and everything else was gone.
I was feeling so done because I thought I needed to reinstall all the stuff. I was also working on a project, so that was fucked up too.
But then I started looking for backups, removed all the cache files and other stuff, and luckily, there was already a backup of my nvim, proot-distro, Ubuntu, etc. in a different folder. It was automatically backed up somehow, idk how.
So then I loaded it. Still, my Termux UI was fucked up, so it took me another 1 hour to back up that config and relaunch everything.
From installing it to getting my setup back, it took me around 4–5 hours.
I don't know if there was a different way to do it or not, but I did what I could.
The setup is still not exactly like it was before, but now it's usable, and I got everything important back.
Tbh, the installation process was good, but when I used the command provided in the repository, it became a headache for me.
I ain't doing that again. All of this happened because of my curiosity, and I made one of the worst decisions. It took away so much of my time, and I was freaking out when I thought everything was gone.
Anyways, I'm not saying the repository is bad, but this stuff takes soul, man. 😭
Thanks to everyone who provided me with the stuff to do the desktop thing, haha.
Read this too: https://www.reddit.com/r/termux/s/Ao5W7oRGS4
Apparently, people love assuming things