You can install real linux distribution or linux distro in Termux.
pkg install git -y
cd Linux-Installer
chmod +x setup.sh
bash setup.sh
OR
./setup.sh
bash linux-installer.sh
Or
./linux-installer.sh
./start-name_of_distro.sh
Example:
./start-ubuntu.sh
./start-arch.sh
./start-debian.sh
etc.. and etc...
bash update.sh
Or
./update.sh
bash uninstaller.sh
Or
./uninstaller.sh