I first used Ghidra this weekend as part of this series:

https://www.youtube.com/watch?v=d7qVlf81fKA&list=PL4X0K6ZbXh...

(#3 forward uses Ghidra)

It worked fine in Ubuntu and Windows. The interface takes some getting used to, but paired with Bless Unofficial (using snap to install), it makes reverse engineering smooth.