There's actually a new feature for this! https://www.windowscentral.com/how-use-windows-sandbox-windo...

However, I use Virtualbox and/or VMware Player a lot, and Hyper-V doesn't play well with others, so I can't use any features of Windows that depend on Hyper-V virtualization.

I personally use a UWP app that embeds Discord's web interface. It's surprisingly serviceable.