@Sgcouey It's been a while since I built my credit up (I moved to the USA from Canada almost 25 years ago now), but I remember slowing building it up, just by paying my bills each month on time or a little early. I was lucky in that I could transfer my Amex card from Canada to the USA, so I started off with a bit of credit.
I also wouldn't discount talking to your local bank about your situation. Try making an appointment with someone to talk about your situation and how you'd like to start building more credit, I bet they'd be happy to help. (At least my credit union would).
Good luck, let us know how it goes.
PS: I wouldn't rush to buy a house - this week I had to pay a plumber a few hundred dollars to clean out a drain, and the thought crossed my mind if I was renting I wouldn't have had to pay it. Lots of expenses when owning a home. Lots 🙂
