Is it possible to make a game as fluid as Brawl Stars using Unity?

I have already tested Brawl Stars on very bad phones and yet the game can run with a lot of quality and performance, some games I make using Unity seem to have a certain delay, even with only one button (usually the first time i click on it).

 

https://themindstudios.com/blog/how-to-make-game-like-brawl-stars/

 

I had seen this topic before, but I don't think it addresses my exact question, which is the fluidity of the game.
For example, I created a game with only one button and realized that whenever the game starts, the first click on that button has a certain delay. I also noticed that there is a considerable delay between my click and the button reaction. Ok, I just talked about buttons, but that's my general perception.

 

Without seeing your code, is impossible to say what it does wrong.
Chances are, you are instantiating, creating, or Log to console something.

 

I think I found my problem: https://answers.unity.com/questions/957256/why-does-eventsystem-lag-on-first-touch.html