There is a legacy version of Prism Launcher, primarily for older versions of Windows like Windows 7 or Windows 8.1 and/or 32 bit Windows.
You can download it here:
Advanced Windows install options
winget install -e PrismLauncher.PrismLauncher
scoop bucket add games
scoop install prismlauncher
scoop install prismlauncher-qt5 #if you want Windows-Legacy instead
# Install standard version
choco install prismlauncher
# Install legacy version
choco install prismlauncher --package-parameters="'/legacy'"
Chocolatey and Scoop packages are community-maintained, Prism Launcher is not responsible for outdated versions.
A community maintained portable installer for Prism Launcher can be found here.