Overclocking help

have an old pc that i’ve had for years been wanting to overclock it, but i seem to fail every time throughout the years I mainly play valorant some times stream on obs i use process lasso to force my e cores off valorant to get the most out off single core performance but im wanting to over clock just for the experience and learning, my bios is updated

my cinebench scores are hitting

Multi-core: 21,124 points

Single-core: ~1860 points

which seems abit low, can anyone help out?

i seem to crash everytime and give up tried for years give up every time and come back to it

Intel Core i7-12700KF

ASUS Z690-A Gaming WiFi D4

32 GB (2×16 GB) DDR4 3600 MHz C18

NVIDIA RTX 3060 Ti

Corsair RM850 850W

Deepcool AG400 Plus Air Cooler, 2×120mm fans