Simply run the script in fonts as root. It installs the segoeui.tff to fonts directory then reloads fontconfig cache.
From here you would then pick Segoe UI Regular font (the Windows font which is ironically open source) in your apperance tool like lxapperance for GTK apps and qt5ct for Qt apps.
Some DE's provide a way of uniformly using the same theme and icon for Qt and GTK apps (like cinnamon AFAIK)
Install the icon theme and pick a wallpapers in the wallpapers directory
I recommend first installing the icon theme in lxapperance then picking it in something like qt5ct for Qt apps.
If Qt apps do not respond to changes check if QT_QPA_PLATFORMTHEME=qt5ct is in your environment (/etc/environment).
GTK apps should work with minimal to no configuration.
I'd pair this with a good dark theme like Breeze GTK or any of your liking!
DWM
Awesome + lxpanel
I'm not really a pro-ricer 😆
nemo file manager integrates really well with the icons
Please view the Sources for the various sources of themes, icons and segoeui.ttf