Anyone know how to sell my University Note for money? (Like the Old Studocu)

I was admitted to hospital last month and lets just say it impacted my money alot
I am planning to sell some of my University Note online, I remember doing it back in Studocu and I tried to do it now only to s that they had stopped doing so
So I want to know if anyone know any good website that will paid for me uploading my note? Thank you