Can't add litespeed repo in Ubuntu 22.04

I don't know what I'm doing wrong, but I'm trying to add the litespeed repo to install lsphp80.

This command works and does not return an error:
sudo sh -c 'wget -O - | bash'
I've also tried:
sudo sh -c 'wget -O - | sudo bash'
(I've also tried running it as root...)

But when I then apt update and apt search lsphp80 or lsphp*, I get nothing.

There is no lsphp...

Can someone show me how to add it to a list file in /etc/apt/sources.list.d and also add the gpg key?

What am I doing wrong? (Thanks in advance.)