My RTX 3070 won't fit in my PCIE slot! I need some assistance please

I explain in this video what devices PCIe x1 slots are used for on a motherboard I also attempt

On the B550M they are aligned perfectly whereas on the B450M the primary slot is underneath the left middle screw So If you're buying an mATX

where is the slot in hockey  inch between slots Yes this What @USAFRet said Almost 20mm or 2cm or ' Although some boards don't have max number of slot

where are slot machines made There are 5 common types of PCIe slots and cards: x1, x2, x4, x8 and x16 The numbers represent the number of lanes on the card or slot Just