i need advice on gaming pc's

[littleleah]

Hi, so I'm looking into buying a pre-owned pc, I need some help with knowing about the specs. I'm a little sceptical because it was originally listed on the 22/12 and originally for $800. I'm brand new to pc gaming so I have no experience with this kind of thing or what I need. The main reason I'm looking into it is because I want to play Fallen Order and my current laptop is running it very slowly, and won't start gameplay.

i5 6500 16gb RX580 4gb RGB Gaming PC

SPECS LISTED:
i5 6500 under a Jonsbo CR1000 cooler
B150M-A Asus Motherboard
16gb Corsair Vengeance Ram
Corsair VS550 power supply
Silverstone PS15 MATX Case
RGB Fan Kit with remote
Sapphire RX580 4gb

 

[littleleah]

What do you recommend? As i mentioned I have zero experience with building pc's and don't even know where to start or what specs I should have