1000-1200 AUD pc

I’m want to build a pc or look for one that’s prebuilt, but I’m not sure where to start or what to buy. I want preferably a white pc, can be aesthetic with lights and display screen but not necessary as I’m probably going to put it under my desk. I want to use it for school work, Minecraft, Roblox, sims and some other games. I want it to be Wi-Fi connection and the fans shouldn’t be too loud.

New build or upgrade? - new build
• ⁠Existing parts/monitors to reuse? (List with models/links) -no
• ⁠PC purpose? (Gaming, editing, etc. List apps/games) - gaming, school work, Roblox, Minecraft, sims
• ⁠Purchase country? Near Micro Center? (If not US, list local vendors) Australia
• ⁠Monitors needed? (Number, size, resolution, refresh rate) no monitors needed
• ⁠Budget range? (Include tax considerations) 1200$ AUD
• ⁠WiFi or wired connection? Wifi
• ⁠Size/noise constraints? Medium sized, can fit under a desk and shouldn’t be too loud
• ⁠Color/lighting preferences? White
• ⁠Any other specific needs? No