Washing clothes by hand (possible tmi)

Hello! My family recently started washing clothes by hand.

Just moved into a new home that didn't come with a washer and dryer, cant afford to buy one or go to a laundromat so, we're washing them by hand!

Anyways, I'm looking for some advice on washing underwear. I cant seem to get mine clean and being a girl, I dont feel they're as clean either.

In all honesty, after wearing them for about an hour, they start to smell like lady parts rather strongly. I know it's not me, it's definitely the underwear (I'm assuming not being as clean as they should be) and I dont know what to do about this SO, anyone know? 🤔😂