If you want to go to a bar and meet other people, go to one with a pool table. Hitting on women is much smoother when you meet their girlfriend's boyfriend first, and better tolerated whether she's interested or not.
In Germany/Switzerland it's not common to go to pool bars and talk to "meet other people". People will look at you funny if a random stranger from the bar talks to them for no reason. Here at bars, you're expected to bring you own group of friends and stick with them. Not every country/culture has such warm/welcoming social etiquettes as US/UK/etc/
If you want to go to a bar and meet other people, go to one with a pool table. Hitting on women is much smoother when you meet their girlfriend's boyfriend first, and better tolerated whether she's interested or not.