so if you wanna make an image your pfp on scratch, instead of cropping the image a million times (i tried to make an image as my pfp and I had to crop it like 8-9 time before it worked), download an app called canva and click the plus in the bottom right corner. Then scroll through until you find the 500x500 one, or the logo one, or you can search it. Then just make the image you want to have as your pfp the background and mess with it until the image covers all of the background and save it. Then it'll be in your camera roll and you can make it as your pfp
this is for if you're on mobile, idk what to do if you're in a computer. Also I'm not the one that came up with this idea someone else did except i don't remember their account, except i provided more instructions as to what you do incase you're confused