Sacrificing a rook

It's been a while since my last post. However, I'm still a chess n00b. On the other side I am starting to discover some tactical and strategical aspects that help me more and more in my games. For instance, exchanging the knights for the bishops. Players around my rating easily give away their bishops for my knights and I think this is a win for me. 

Another thing is the rook sacrifice. Players seem to be very greedy when I expose a rook and usually blunder a lot. That's why I like to set up the kind of traps where I sacrifice a rook. And I want to share some examples. Of course, my play is also not faultless. 

Here is the first example with a player rated higher than me at that point. 

And a second one: 

And a last one:

So my conclusion is that, at least at my rating level, setting up a trap when sacrificing a rook usually wins games. 

Any type of feedback is welcome