Is using an Matrix account from matrix.org private and secure enough to talk with my family members and people in general?
So, I was told to not use Signal, so all that is left is Matrix. And I am not techy enough to have my own server and neither are my relatives, so Matrix.org is the only option
Molly also has some quality-of-life improvements - such as allowing to enter a device pairing link manually instead of scanning a QR code (thus allowing use in a VM for registration without a smartphone), or being able to use a generic Socks proxy instead of Signal's own solution. Not only does that allow running Signal over Tor without using Orbot as a "VPN", but is also more versatile (I wouldn't want to set up a separate proxy just for Signal, and also their implementation is apparently inferior to some advanced obfuscation solutions).
P.S. Also idk if this has been fixed, but Signal's app bugged out during registration and got stuck on "no google services" warning on my Graphene device, yet Molly went through flawlessly.
Servers are always going to be owned by someone. But the data is encrypted with keys not available to the server. Signal isn't perfect, and I don't like some stuff they do, but it's the best design out there that is also relatively user friendly and doesn't have holes that are easy to exploit by the server owner.