DELL G5 2021 gaming desktop - changing CPU/RAM/Storage/GPU

I got an used (and ...mangled) DELL G5 Gaming Desktop off of Marketplace. Looks like the front part of the case was cut off to possibly fit a longer GPU in the past. It still works though, just has some strange parts in it: Celeron G5905 (10th gen LGA1200), random RAM sticks (one of them appears to be an HP OEM)...
0:00 CPU
1:43 NVMe SSD
2:30 SATA SSD
3:11 RAM
3:55 GPU

[@a.dhanusha5b732]

Bro pls mention veriton x4620g components name 😢