I currently have a very basic one that came with the bike (pic rel). It's at proper height so I get zero pressure on the perineum, but if the terrain doesn't require me to get up every couple of mins, I quickly get sore sit bones. I wanna do some touring (min 50 km daily) so that won't do. So, I measured them bones and set about finding a new one.

Thing is, I have zero experience with other saddles and have no clue what to look for. It seems like saddles under 50€ aren't worth looking at, but it also seems like I'll have to buy multiple either way until I find the right one. It baffles me that saddles go up to 300€ and there's never a way to try them out. Am I just supposed to waste money until I luck into one that fits? Is there at least a flowchart?