Macaron halves aren't pastry, they are a type of meringue, I'm assuming you aren't making pastry too.
You can't add red bull to the macaron sides, it will ruin the consistency and you won't get lift. Instead you need to add a flavoring concentrate, and you are in luck because you can actually buy red bull flavoring in some places,or energy drink flavoring which is similar. This is likely pretty strong so you'll want to be careful adding it, too much will be overpowering. In fact, if you are new to macarons I would suggest making at least one batch beforehand as they are tricky little so-and-sos to make.
The cream is much more flexible, you can add Jagermeister to that and still get a good consistency, again test how much works. A handy trick is to coat the flat side of the macaron halves with a thin layer of white chocolate, this will keep them from getting soggy from the cream.
Asking for recipe alternatives is off-topic, my advice would be the same for most of them anyway: don't use red bull but a flavor concentrate. If you are looking for something less technically challenging you could do a cake and icing, as those work well with flavorings, just start with a cake that is unflavored to begin with or your flavorings will clash, a white cake recipe for example.