UE 5.3 crashes at initialization

Hi there!

I am uncertain as of what is causing this issue but I did notice some things from your logs which you may want to consider.

Unreal as far as I know does not come with PythonScriptPlugin out of the box so I am unsure as of why that file would be missing. Perhaps your download was corrupted and you could try redownloading the Engine.

Other then that you might be hardware limited since minimum requirements for Unreal Engine suggest you need a 2.5Ghz or faster processing unit.
Source: Hardware and Software Specifications for Unreal Engine | Unreal Engine 5.0 Documentation

If you decide to redownload, I would suggest that you install it on internal storage, you can migrate it later if everything works by renaming the file, starting another installation on desired drive, stopping that and deleting a version file and then copying the first file there after which you resume download.

Another thing you could try is making sure your graphic drivers are up to date.

Good luck!