I love Pidgin. If I want a secure chat between 2 I will forse my buddy to go XMPP OTR

You should also checkout OMEMO which is based on the Signal protocol and allows things like group chat and sending messages to contacts who are offline.

I have tried Matrix not on my wish but it has not worked. Also I like Tox but it needs processor with hardware cryptography and have not use it a long time.

OMEMO is an XMPP extension: https://omemo.top/