BetterDiscord

Setup

On Windows :

Download better Discord: https://betterdiscord.net/home/
Just run and install

On Linux (& you can use this if Betterdiscord is broken):

sudo betterdiscordctl uninstall #Previous version
curl -O https://raw.githubusercontent.com/bb010g/betterdiscordctl/master/betterdiscordctl && chmod +x betterdiscordctl
sudo mv betterdiscordctl /usr/local/bin
sudo betterdiscordctl update -s /usr/share -v -v
sudo betterdiscordctl upgrade
sudo betterdiscordctl install -s /usr/share -v -v

Plugins installation:

Put your plugins to this folder:
Windows: C:\Users\YOURUSER\AppData\Roaming\BetterDiscord\plugins
Linux : /home/YOURUSER/.config/BetterDiscord/plugins

Themes installation:

Windows: C:\Users\YOURUSER\AppData\Roaming\BetterDiscord\themes
Linux : /home/YOURUSER/.config/BetterDiscord/themes

Enjoy !