Question CPU usage is higher than GPU usage

[Max Arthur W]

Specs:
i5-9400F
GTX 1650 super (MSI Ventus)
16GB RAM (Dual Channel, 3600MHz, TForce Delta RGB)
750W PSU (Corsair CX 750)

More:
AIO cooler (Cooler Master ML240R ARGB, 240mm)
Z390 Motherboard (Z390 AORUS ELITE)
M.2 SSD (WD Black SN750 250GB)
HDD (Seagate Barracauda 4TB)



So i got this PC in 2020
And someday, while i play on my PC, my house electricity went out.
After back, i turn on my PC and its lagging so much. I try to reinstall Windows, and its make it faster.
but, not in gaming, so my game is extremely lagging. i look into task manager, and realize the GPU usage is just 0-10%
Then i try to install new driver. It just make the GPU usage up around 10-20%. I try to reinstall ram, reset bios settings, but
it didn't work. Any tips?

 

[rgd1101]

cpu/gpu temp during the game?
ram, ssd usage?
how full is the ssd?