It's incredibly easy to fall back on the same phrases espescially with a hot mic and the necessity to talk, I think many people overlook this. I usually listen to all my casts at the gym or on a drive to try to identify these things and eliminate them. It's not easy to do. I've noticed myself doing it in real time, tried to stop it, and the very next time continue to do it. I used to say reciprocate all the time when both teams popped uber and it was a deliberate thing I had to stop.
Don't feel bad about this. Everyone does it in some form, the beauty about what we do as volunteer casters is we get to learn and work on these sorts of things. ZP, the play by play guy for GosuGamers OW, says "that being said" after everything. It's just the nature of the beast, and something we can all work on.
At least you don't have the voice of a 15 year old Brooklyn Italian.