Those are really cheap laptops. Can guarantee they will be laggy over pretty much no time. My mum bought a £500 one and after just a year it's the laggiest piece of shit in the world, would run smoother to use a microwave instead. If you're cashing out for a laptop, go for a really good one, or go for none. Cheap laptops are just terrible, I've had 3/4 of these:
https://www.amazon.co.uk/ASUS-X555LA-...ds=asus+laptop
And they're still shit after a month, no matter how much defragging or formatting I do on it.