@HansKristian-Work Zenless Zone Zero refuses to just use vkd3d proton for some reason
to launch zenless zone zero with dlss rtx dx12 you should use
PROTON_USE_NVAPI=1 %command% -use-d3d12
but if you want to use sleepy launcher like i did you need to copy the vkd3d proton files to the prefix of the game.
/.local/share/sleepy-launcher/prefix
if you want to install zenless zone zero you would need to either get sleepy launcher from flatpak or get it from the aur.
Please do try to resolve the issue thank you.