Tactics are everywhere
I recently looked at the game Uhlmann—Zwaig from Halle 1967, and a possible tactic caught my attention (it did not actually occur in the game). It’s a great example of looking for checks, captures, and threats before considering other moves!
If you haven’t been looking for checks, captures, and threats before when playing chess, try it. I guarantee it will transform your play, and your results. This is how you can apply the chess middlegame tactics you have hopefully been practicing!