The reasons why the game Fortnite It could crash or freeze, they are basically due to internet connection failures, errors in the game files, problems with the software, a computer that only has the minimum requirements with no margin of slack for the game to run properly, and for Lastly, Fortnite can crash when an Epic Games server crash occurs, either due to scheduled maintenance, or due to failures.
How to fix bugs or crashing in Fortnite
The best solution for Fortnite freezing or Crashing is to check the internet connection. It may be that it is better for you to use a network cable than the Wi-Fi network.
Another solution is to check on social networks or on the official Epic Games page in case there is any scheduled maintenance.
Uninstall the game and reinstall, taking care to have a good internet connection.
If your PC is very old and obsolete, there is not much to do. If you play with the minimum necessary, you will always have this type of error since this game requires preferably medium or high range equipment.