When i press left or right and hit CTRL button, my screen change active desktop tab

Change fire button, to Z or X.

The basic mechanics are solid. If there was more of a goal/point, then it might be pretty good. Like maybe you'd have some number of lives, you'd have to kill increasing numbers of cars to advance to the next level (10 levels to beat the game or something), and there'd be a few different types of enemy cars throughout the game with different sizes/HP/weapons/speeds. Add an upgrade shop and some music and you've got a 4-star game, maybe.

The current board seems cramped, especially vertically. I'd double the screen size, double the horizontal board size, and triple the vertical board size. It's also annoying when you get killed by a car appearing out of the edge of the board; maybe there should be an invisible wall around the edges so you're guaranteed some warning before cars spawn.

Keyboard-controlled games should NEVER require you to switch to the mouse. The ctrl key should restart the game when you lose.