I’m searching for an “noob-proof” matrix messenger that is supposed to replace WhatsApp.

It should have E2EE enabled by default and a backup/restore function for contacts, chats and settings (preferably local backup, but nextcloud would be fine aswell).

It would be nice if you could also mention matrix clients that work on iOS, Linux and Windows as well (if there are any), since not all of my contacts use android or are always reachable per phone.

Happy to hear your recommendations and experiences.

Thank you!