it just shows a gray screen and nothing happens, also chromebook
Okay, since it isn't mobile it's easier to find out what's wrong.
Please do the following steps:
1. Load your save
2. Open the browser console (Ctrl+Shift+J)
3. Replay the scene until it crashes/freezes
4. Copy the console output
5. On the same tab as the current frozen game, go to the top bar and type "chrome://gpu"
6. On the top press "Download Report to File"
Then go to tightly.games/report and paste the console output into the "Issue" text box, and attach the about-gpu txt into the "Attachments".