Signal, Wire, XAMP client app, which is the best in terms of security and privacy?

Signal, Wire, XAMP client app, which is the best in terms of security and privacy?
I do not know which is the best chat app. In terms of security and privacy. Please tell us Windows, iMac, Linux, Android, iOS, Web! !
I heard that Signal uses AWS and Wire collects metadate.

This has been discussed in other threads.

The deal breaker on Signal, for me, is the phone number requirement. That’s it’s weak point. See this article for how the phone number could be problematic: https://www.theguardian.com/world/2019/apr/20/matt-shea-rightwing-messages-chat-records

I am also disappointed in Signal’s TOS disclaimers:

Disclaimers. YOU USE OUR SERVICES AT YOUR OWN RISK AND SUBJECT TO THE FOLLOWING DISCLAIMERS. WE PROVIDE OUR SERVICES ON AN “AS IS” BASIS WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, NON-INFRINGEMENT, AND FREEDOM FROM COMPUTER VIRUS OR OTHER HARMFUL CODE. SIGNAL DOES NOT WARRANT THAT ANY INFORMATION PROVIDED BY US IS ACCURATE, COMPLETE, OR USEFUL, THAT OUR SERVICES WILL BE OPERATIONAL, ERROR-FREE, SECURE, OR SAFE, OR THAT OUR SERVICES WILL FUNCTION WITHOUT DISRUPTIONS, DELAYS, OR IMPERFECTIONS. WE DO NOT CONTROL, AND ARE NOT RESPONSIBLE FOR, CONTROLLING HOW OR WHEN OUR USERS USE OUR SERVICES. WE ARE NOT RESPONSIBLE FOR THE ACTIONS OR INFORMATION (INCLUDING CONTENT) OF OUR USERS OR OTHER THIRD PARTIES. YOU RELEASE US, AFFILIATES, DIRECTORS, OFFICERS, EMPLOYEES, PARTNERS, AND AGENTS (TOGETHER, “SIGNAL PARTIES”) FROM ANY CLAIM, COMPLAINT, CAUSE OF ACTION, CONTROVERSY, OR DISPUTE (TOGETHER, “CLAIM”) AND DAMAGES, KNOWN AND UNKNOWN, RELATING TO, ARISING OUT OF, OR IN ANY WAY CONNECTED WITH ANY SUCH CLAIM YOU HAVE AGAINST ANY THIRD PARTIES.

(emphasis added)

Nothing is perfect, and they don’t want to be held responsible for people using their services only for something to go wrong and to be sued. And you never know in the world of security and cryptography, you can screw up easily.

It doesn’t disappoint me. It’s just smart, IMO.

This was also talked a lot in the Wire thread.