I have a few things that I like for physical exfoliation. Most evenings I wash my face in the sink with a soft washcloth, so that’s my basic exfoliation. If I need something more I’m a big fan of dermologica microfoliant. It’s a fine powder that very gently scrubs your face (I use face wash afterwards). Since that’s mostly rice powder I’ve also used rice flour as a cheap alternative. It’s more scrubby and doesn’t foam, but it’s so cheap it’s become my go to. I also find that many masks are just a bit scrubby so those can work too. I like sulfur ointment as a mask, it’s gritty so that scrubs my face just enough (plus sulfur helps acne). Clay masks can also be a little bit exfoliating, but those are more drying.