My mother currently uses WhatsApp but really doesn’t like the way it looks and feels.

She’s not very tech-savvy, so I want to find a messaging app that is:

Easy to use for someone older

Similar core functionality (text, voice, video)

Privacy-friendly if possible

She originally got into WhatsApp because while using regular texting, random messages wouldn't go through, due to the whole ios/android wars.

I’ve looked at Signal, Threema, Session, and a few others, but I’m not sure which would be the smoothest transition from WhatsApp for her.

What would you recommend for older users who are coming from WhatsApp but want something simpler or more pleasant to use?