Hello everybody, this is my first time shaving and first time posting.

I'm 18 years old and recently bought a disposable straight razor (to see if I will like using a straight razor). I bought a shaving set (bowl, brush, soap) off the internet but it's not in yet and I couldn't wait haha. I have some pretty nice American Crew shaving cream so I just used that and for some reason, I could not get the razor to cut my face. I just ended up using a disposable razor to finish off. I know I'm going about it the wrong way, but did I do anything wrong with the razor... or is it just the soap???