I got my prohibited license!

Heyyy yall so I’ve had my prohibited license for the past two days. But I was wondering what my restrictions are because people are telling me different things even though I’ve been looking up the Wisconsin dmv. So I’m 18 years old right, am I allowed to drive alone and I don’t have time restrictions? Bc when I was telling my friends mom that I passed my test, she said that I still need an adult 21 or older for another 9 months and I’m limited to passengers. All I know that I’m prohibited from is drinking but people keep telling me different things and I’m so confused 😭