FWIW I’ve been using Ubuntu desktop with CasaOS for a couple of months now to host Nextcloud, Jellfin, Immich and a few other bits and bobs with absolutely no issues at all so far!

Despite SMS not being secure I’m determined to stop using WhatsApp and haven’t installed it on my new phone. My old phone has WhatsApp business with an auto reply saying to contact me on signal or send a text. Granted I don’t have a huge contacts list but 4 people have started using Signal and the rest send a text, so this is good news in my book.