I use element, I like the interface, and the option to opt into beta features. Though I did use Fractal for quite a while, since it is lighter than electron, and I usually use gnome so it integrates nicely. Though I can also recommend Nehko if you used irc a lot. It was my main irc client back in the day and I loved it, I just kinda fell off when everyone moved to Discord though I might switch back to it from Element at some point after the spec is more stable, Element is still the fastest way to get updates, and is pretty much the best mobile client.