Nobody decided that it's a crime, and it's unlikely to happen. Question is, what do you do with mandatory snooping of centralized proprietary services that renders them functionally useless aside from "just live with it". I was hoping for actual advice rather than a snarky non-response, yet here we are.
You're asking for a technical solution to a political problem.
The answer is not to live with it, but become politically active to try to support your principles. No software can save you from an authoritarian government - you can let that fantasy die.
I gave you the answer that exists: I'm not aware of any existing or likely-to-exist secure messaging solution that would be a viable recommendation.
The available open-source options come nowhere close to the messaging security that Signal/Whatsapp provide. So you're left with either "find a way to access Signal after they pull out of whatever region has criminalized them operating with a backdoor on comms" or "pick any option that doesn't actually have strong messaging security".
Not the GP, but most of us want to communicate with other people, which means SMS or WhatsApp. No point have perfect one-time-pad encryption and no one to share pads with.
