I got Element on my desktop, Schildichat on my phone. Bridged to all other messengers I used. IRC is handled with Heisenbridge. Before this I used weechat+bitlbee. Matrix is better, more capable, but way heavier, on both the server side and client side. I even dabbled in XMPP but in the end just bridged it into Matrix as it's not much better by itself (though it also supports extensions and can connect to many IM networks). The clients are buggy, especially on Android, they overheat the phone for no reason (when in use. Notifications are handled via push so background usage is great). But XMPP wasn't better in any other way so Matrix remains my go-to solution.