The $ZSH folder already exists (/home/ateya/.oh-my-zsh). You'll need to remove it if you want to reinstall. code example

Example 1: oh my zsh git

sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"

Example 2: oh my zsh git

curl -Lo install.sh https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh
sh install.sh