Discord: Their are custom clients like Vesktop that fix streaming on Linux and add features
Da Vinci: You can use this project for easier use, or just get Kdenlive which is fully supported on Linux
WhatsApp: If you do want to call people you could use Waydroid and install the android version, or if you don’t need calls but want background notifications you can use Zapzap
I pronounce the last e like the second one