I'm going to be honest, as a long time Linux user I also think this is one of those issues that is more common than it should be. It's incredibly annoying and really pushes you away from using it as your daily driver.

Btw, check your last boot's log with sudo journalctl -e -b -1 to see what its dying words were. If you're lucky it's dying when coming back up and spitting the related errors in red, but sometimes it will just be "Reached target sleep" in which case it's a bit of a bitch to troubleshoot. You can look through the logs to see if any error might be related, but if you're not well versed in Linux it might as well be an alien language. Common suspects: Nvidia, Bluetooth, encrypted swap or RAM, ACPI bugs, BIOS needs an update.