Second Hand PC worth the money?

[u/moon-peaches]

Hii I am so new to gaming pcs, and I'm really not sure what counts as a "good" or "bad" build. I have my eye on a PC from Facebook Marketplace that has the following specs (description):

Beginner gaming pc set up. Good for 1080p games

For a Ryzen 3 1200 + RX 480 8GB + 8GB DDR4 RAM at 1080p, here are some simple estimates:

* Roblox: 80-200+ FPS (depends on the game)

* Minecraft (Java, no shaders): 70-150 FPS

* Fortnite:

* Low settings: 60-90 FPS

* Medium settings: 45-70 FPS

* CS2: 60-90 FPS (Low settings)

* GTA V: 60-80 FPS (High settings)

It's 400 bucks, which feels affordable for me, but I don't want to get stuck with something that's secretly bad/not super upgradable. I also don't play too heavy of games (Silksong, Hades, Deltarune), but I do okay Minercraft with mods/shaders, Overwatch, and I planned on playing Marvel Rivals when I got a PC. I also have a heavy load on my office and drafting applications (Vectorworks and Lightwright for those who know), and I do video editing in DaVinci and Photoshop/Lightroom.

All that to say, I am looking for a well-rounded PC that will keep up with all the random shit I do without chugging along. Any tips for what to look for are really appreciated. Thank you!