The best option so far imho for this context is keet.io
Pure p2p, e2ee, amazing performance as it runs without central server infrastructure
Use nostr:npub1exv22uulqnmlluszc4yk92jhs2e5ajcs6mu3t00a6avzjcalj9csm7d828 messenger! It gives you the best #privacy protection.
Unlike #Signal it doesn’t need your phone number.
#Telegram and #WhatsApp not only want your phone number they collect loads of data and metadata from your device. Especially vile is the collection of your device‘s IMEI (device ID) and sharing all that data with companies to make money and with authorities due to the need to comply.
In authoritarian countries this metadata can cost you your life! 
Discussion
keet.io will become really great. But for now it’s to new and has still to much bugs and missing features. I also think it never will reach the privacy level of simplex.