It could use a bit more explanation, but I like Matrix because of its structure:

• you have the normal chat function

• group functions

• you can create rooms and spaces for larger topics

• you have a direct overview of whether the files in the chat are safe

This is also very handy for me in the family area, because I can divide and separate different topics in such a way that I can avoid a longer topic taking up entire chat groups that are actually meant for something completely different.

Matrix in particular always gives me the feeling of having a messenger with a forum where I can communicate and socialise both locally and internationally.

It's also my file-sharing app (as it's pre-installed on Linux), as Warpinator is only available for Android.

But yes, I would definitely recommend Signal for its speed of use, Threema is more or less the same but with a premium. With Matrix, you need to get used to it before you can use all the functions.