Conclusion
Building your own play style is very useful, because it organises your game and reassures you during important moments (level scores or end of set or match)... but your opponent also has their way of building their play style and duelling.
Sometimes, the opponent does not always play the same way and will change their play throughout the match, taking advantage of or being harmed by the flow of momentum in the match.
So how do you adapt to these changes?