Forget unreal in general. If it runs on a laptop that’s gravy. But running it consistently on a laptop means getting the laptop to burn.
Or at the very least, reducing the laptop’s life expectancy by 80%.
For the storage.
If the laptop doesn’t include an m.2 slot and at least 1TB m.2, then it’s probably trash or near trash.
A 2tb m.2 with some of the best speed is as low as $300 right now.
I suppose you could always buy a decent m.2 and re-install the OS onto it - which is likely the way I’d go about it anyway.
However good laptop options are rare and expensive currently.
If you are willing to give it a month or so I think you may find bette products - the problem will be avaliablily, like for all other silicon stuff right now…