How do I use Europe train pass to make reservation ?
I think you need a look at your map, as I do not know, nor can I find, as town called Bugger. You might mean Brugge or Bruges (same town different language name,) in that case, it is silly to travel go there on the way from Brussels to Paris. For the hourly trains between Amsterdam and Brussels, also stopping at Antwerp for a connection to Bruges, you do not need a reservation, I think you can not make them either. You can make a reservation for the Thalys, but I think there is a surcharge for that reservation, and you win about 10 minutes on the leg to Brussels. Between Brussels and Paris the time you win on the Thalys is bigger, but still, if you have no reservation you can travel on the normal trains. So do not worry if you can not get a reservation. You can look up train times and needs to reserve on the train planners, for most of Europe the German planner works very good: