You didn't reveal which OS you are going to install so I can't be too specific but both Linux and Windows let's us remove all partitions before the install starts so the drive is effectively wiped.
That said there are folk that will replace an entire PC or drive because they can't use the menus during install to get this done.
I’m buying new components for my computer I had in college and I really like the hard drive I have (WD Black2TB). I’ve never wiped a hard drive before and it was having a hard time before I even put the computer to rest. I don’t know if I picked up some malware from being an idiot college girl or something else but either way many years have passed and I’m ok will a clean slate.
What’s the best process for this? Would replacing the drive just be easier since it’s not super expensive? Just while I’m quarantined I’d really like to play some games.