First step :
pkg install nano
pkg install curl
sh -c "$(curl -fsSL https://github.com/Cabbagec/termux-ohmyzsh/raw/master/install.sh)"
~/.termux/colors.sh (change color)
~/.termux/fonts.sh (change font)
Second step :
source ~/.zshrc
git clone https://github.com/zsh-users/zsh-autosuggestions ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/plugins/zsh-autosuggestions
nano .zshrc
zsh-autosuggestions
Note :
type ctrl + x and Y to save and exit