Today you have the bidets you can install on your toilet, but traditionally they were a thing on its own, that required about as much space as a toilet and all the extra pipework associated with it.
In some European/ Mediterranean countries (I suspect France may have started the trend) this caught on well, and bidets were a must have in most houses that had toilets as part of their main architectural structure. Most people in South America had bidets this way, it's rare to see a house without at least one bidet, and this comes from the culture inherited from colonial times .
Now, things are different in othe parts of the world. England seems to traditionally have the toilet separate from the house and for some reason the bidet trend never caught on. This is in turn reflected both in USA and Australia. I don't know about bidet popularity across all of Europe, but this is definitely a cultural thing and I suspect distance and language may have kept UK without bidets until relatively recently. And as you know, old habits die hard, so... Yeah in Australia I use the shower.
can confirm. i sit on the side of the bath and wash my arse with the shower. The only house i have seen in the UK with a bidet was essentially a mansion