How does a 19 year old get approved for a loan asap

[Denver Borst]

Hello! I’m 19 years old, and I just started my first full time job at a Jeep dealership. I’m doing great so far, but obviously my  real goal is in real estate. I want to get into rental properties in Grand Rapids Michigan. Right now I’m living with my dad and saving up money, for a down payment on a rental property. I’ve talked to a few lenders and they all say that lenders want to see at least a year on the job, and established credit. My question is, what can I do to ensure in a year or so that I will get approved for a loan. I’ve never taken out a loan, I have a credit card and am on my parents cards as an authorized user. Is there anything else I can do in the mean time to better myself for an approval? I don’t have access to a co-signer ( unless someone in the Michigan area wants to work with me ) Thank you!!!