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Is it giving an error message? Also, are you on mobile or pc?

Generally, if there are crashes without messages, it's because of something that's fundamentally not correct (like a conflicting program or a failure during installation). It's not impossible that the game would crash quietly, of course, but Renpy is pretty good about at least spitting out *something*. So, if this is the case, I recommend doing a full reboot, then doing a full reinstall. If it's on mobile, pretty much the same: reboot the device, and if that doesn't fix it, uninstall the game and reinstall. If you're worried about save files, you can temporarily store them in the cloud using the 'upload sync' and 'download sync' option in the save/load menu.