You can also say "elsewise", which to me still sounds a little old school, but more natural than just using "else" like we do in programming languages.

It's almost tempting to reach for "elsewhen" or "elsewhy", since we have "elsewhere". But if saying "elsewise" feels like chatting with a very elderly relative, saying those ones feels more like a seance with distant ancestors. But apparently it used to be a thing!

https://en.wiktionary.org/wiki/elsewho#English

https://en.wiktionary.org/wiki/elsewhither#English

https://en.wiktionary.org/wiki/elsewhence#English

https://en.wiktionary.org/wiki/elsehow#English

https://en.wiktionary.org/wiki/elsewards#English

https://en.wiktionary.org/wiki/elsewhat#English

https://en.wiktionary.org/wiki/otherwhat#English