Best Real Estate Strategies That Requires Less $$$ Upfront

I've been educating myself on the different real estate strategies to getting started. I live in NYC and wanted to do house hacking, but realized that houses are too expensive for me here. I visited Philly especially North Philly, and noticed that I could do a BRRRR, but realized that my return on investment would be less than doing a house hack. Reaching out to see what are the best real estate strategies in Philly that would be inexpensive when starting out. Thanks in advance.