I'm a fan of self-hosted Matrix server. You can get a dozen of bridges for those stubborn people that refuse to leave messenger/whatsapp/telegram (at a loss of encryption, and they still get your convos, but at least you don't have their spyware on your mobile and you can have everything in one app), while also being decentralized.
Self-hosting a server is actually really, really easy. It took me like half an hour, because there is an amazing Matrix Ansible Deploy script, that has a pretty easy to follow documentation, and is also one of those super-rare projects that just works. Even if I forgot to update my server for several months, I could literally "just update", and the script is clever enough to figure out what changed, tell me what I need to update in the config files (which are still only like four rows of stuff I needed to setup), and it is a really smooth experience. Even when you want to set up some bridges, for most it's literally just adding "_bridge_enabled: true" to the ansible yml config file. I've already set up Telegram, WhatsApp, Discord and Messenger this way, and it was effortless.

That sound like a fun idea.
Is it illegal to use a fake name for such interviews, or rather - can it get you prosecuted, i.e if the company would get really salty and sued you for their incurred manpower? As long as you don't submit any fake legal documents, just sending a fake CV with fake name and creds, maybe going to an interview or two, only to bail out before providing anything legally binding, is it a persecutable crime?