For me personally, using a suede brush and a pencil eraser has worked well.
This page has links to high-rated suede cleaning tools and in-depth cleaning guides!
Suede/Nubuck Cleaning Brush: https://www.amazon.com/Shacke-Suede-Nubuck-Leather-Cleaner/dp/B00IIFFEPU/ref=sr_1_5?keywords=suede+cleaning+brush&qid=1670551743&sprefix=suede+cleaning+bru%2Caps%2C215&sr=8-5
Jason Markk Suede Brush/Eraser: https://www.amazon.com/Jason-Markk-Suede-Cleaning-Kit/dp/B01ANXQ2NC/ref=sr_1_9?crid=LN4LGDD3WVF6&keywords=suede+cleaner&qid=1673847145&sprefix=suede+cleane%2Caps%2C167&sr=8-9
All-In-One Suede Care Kit: https://www.amazon.com/Gear-Aid-Revivex-Fabric-Cleaner/dp/B002HH0PL8/ref=sr_1_5?crid=LN4LGDD3WVF6&keywords=suede%2Bcleaner&qid=1673847145&sprefix=suede%2Bcleane%2Caps%2C167&sr=8-5&th=1
https://www.nike.com/a/how-to-clean-suede-shoes
https://www.highsnobiety.com/p/how-to-clean-leather-suede-sneakers/
https://www.wikihow.com/Clean-Suede-Shoes
https://www.complex.com/sneakers/how-to-clean-sneakers/