Let's be clear: bidet comes AFTER toilet paper. Not "instead of". That's the modern intended use. So get your stuff together and buy one now! How can you love without?
Definitely not after. Bidet first to power wash the area, then paper to dry and check that there's no residual. That way there is less paper used and less irritation in general.
Well you can bidet before tp indeed...
But nah, first clean with a bit of tp, then wash. Then dry (or don't, I love that little feeling fresh down under, provided you don't powerwash typhoon style ofc)