This game brings back memories.😀 But this is not exactly a one button game. It needs multiple key inputs. 😅 I think you have just started game development. Probably you should start using some game engine.
I don't want to be the bad guy, but I think you have just re-uploaded one of you previous game with just a different title and image. Guess the number is same as this one. Even the file sizes are same. 😆
You should also add some instruction on you game page saying the all the files need to be downloaded in order to play this game, or you could also zip the html and js file in a single zip file.
Also, since your game is playable in web-browser, why not rename the guessTheNumber.html to index.html and then zip index.html + number.js into a single zip file. That way you can select the "This is will be played in browser" option while uploading that zip. This will allow player to play this game online, without having to download anything.
Anyways, all the best for you future projects!!!