Don’t forget you can customize it to make it your own.
I added a panel on the left side of one monitor (right side of the other) so I have a Unity (7) style quick launcher on the side of my monitor (pic in screenshot thread of how it looked like July-2019 which shows 2 of my 4 panels only; others show only when mouse is over them), still using the same system now only it’s now impish.
If you don’t like the themes, icon sets, you can download more…
But don’t forget an aim of LXQt is being light, so many decisions are made with that in mind.
Also if you upgraded from 18.04 to 20.04 without re-install, you weren’t seeing an optimum desktop (unless you fixed the LXDE left-over bits yourself).
I’ll provide
but in the end what’s right for you, only you can decide.