i’m new here, i3wm freezes so i tried to fix it myself then i got tired so i tried to change to kde and now i’m lost 
First off hi and welcome to the forum
What steps have you taken so far? And where are you lost?
i’ve been trying for 5 hours already so pardon me if i missed something
it freezes so i log out, got into terminal and did this and gave up, so i installed kde using eos-packagelist --install "KDE-Desktop" , reboot
then got stuck at “reached Graphical Interface” , it still possible to get into terminal though 
Hmm… I imagine you probably don’t have any display manager and the system gets confused somehow since i3 is missing.
Try to install plasma-login-manager from a tty, enable it and reboot.
$ sudo pacman -S plasma-login-manager
$ systemctl enable plasmalogin.service
$ reboot
nothing happened
warning: plasma-login-manager-6.7.4-1 is up to date --reinstalling
=====AUTHENTICATION COMPLETE====
Failed to enable unit: File ‘/etc/systemd/display-manager.service’ already exists and is a symlink to /usr/lib/systemd/system/lightdm.service
It looks like LightDM (the display manager for i3wm session) tries to be launched every time every time you power up your computer.
Is it still installed?
$ whereis lightdm
/usr/bin/lightdm
/usr/lib/lightdm
/etc/lightdm
/usr/share/man/man1/lightdm.1.gz
Force it to change by applying --force to the systemctl command or remove lightdm, since you won’t need it anyway if you are going to use Plasma.