why every time I try to play it’s saying this
Download failed. Check your connection and try againI have a question if I’m using my phone Internet is that OK or is that the problem?
Based on your previous comment, I'm assuming you're playing on an iPad? You might want to try a different browser. Like Safari instead of Chrome, though Chrome worked fine during my own tests.
Also, just to note: the in-game download files are hosted on Cloudflare (the same server itch.io uses). If you can access itch.io without issues, your connection should be able to run the game too!