Function Calls Missing

Title:
Function Calls for Game Logic are Missing

Description:
The Simon Game's core functionality depends on several functions, but currently, these functions are not called anywhere in the code. As a result, the game doesn't work as intended.

Expected Behavior:
The game should respond to user interactions by checking their inputs, advancing the game, and playing the correct sequences.

Missing Function Calls:

checkAnswer(): This function should be called every time the user clicks a button to validate their input.
startOver(): This function should be called when the user loses the game to reset the game state.
nextSequence(): The next sequence should be generated after a correct answer is given.
Suggested Fix:
Add the appropriate function calls in the game logic at relevant points:

Call checkAnswer() after each button press.
Call nextSequence() when the user correctly completes the current sequence.
Call startOver() when the user makes a mistake.