As your first game, well done and welcome! So happy to have people entering the game development space.
Your game proves that keeping things simple is a strength. On the last two levels I made it to the door on the last second and it was genuinely exciting.
Some minor notes:
There was a moment on level 3 where I had some lag, not sure why but it wasn't too bad.
When you die you restart the whole game. Usually I'd say this is pretty brutal but after seeing that there weren't too many levels I'd say it is fine. If you were to add more I'd advise a retry button or a lives system.
Great job! I hope you will continue to make games and good luck.