Paru is an new Arch AUR tools to installing non-official ver. program into your systom. It is very easy to install and can replace off the old yay.
To install paru, open your terminal and type the following commands one by one.
sudo pacman -S --needed base-devel
git clone https://aur.archlinux.org/paru.git
cd paru
makepkg -si
When you check the all update or upgrade of program in Arch, just type...
paru
and type your sudo password then press the Enter. Paru will do it for you automatic.