I'm aware you need a pal game, and the emulator needs to be set to pal, but I still don't know how to floor clip for softlock.

hello, is anyone there?

It's not easy, basically you crouch jump and hope you clip after stomping on the goomba.

it's not a crouch jump, it's just a well timed jump as big Mario.
Also, I suggest you join the Discord server instead of making threads for every question you have, you'll get your answers way quicker