I built this budget template based on my research but am only seeing bad investment returns / don't really know what I'm doing and would appreciate any feedback you all have to offer.

Fair enough, I have partial ownership of a commercial (apartment) building in the Bay Area and I would estimate it as a Class A- to maybe Class B - great location, great tenants, nice amenities (not high end like gym, new pool, community room with big screen TVs, etc), high rents, but building is older (built in 1950s).One investor I saw post that they look at where Starbucks and Costcos are opening and possibly factor that into looking at different markets.

Real wealth is built over time with consistent effort, even when things are difficult.Increase earnings, reduce expenses, save, invest.

One deal I closed last year was right next to a planned shopping center.Realtor Pocket Listings: As a licensed agent myself, I’ve built relationships with other agents who sometimes share “pocket listings” or properties not yet on the MLS.

If they’ve never weathered a rocky market or interest rate shift, their pro forma might be built on wishful thinking.

https://www.torooakpoint.com/   They call them mobile homes, they look like mobile homes, but they're stick built on slab. 

It sounds like you’re in a great position to start your real estate journey, especially with your brother as a built-in renter.

Another rental is in a great area but has struggled recently due to increased competition from newly built apartment complexes.

We finally close with title insurance.14. seller is holed up  its a massive hoarder situation as bad as I have ever seen.15. another 6 months to get eviction.so about 30 months later we finally take possession and bull doze house and built three new homes.  250k in out for 30 months  another 30k in legal fees..

However, in the inner ring suburbs that I live in, there are quads everywhere, built in the 1920-1960s, generally, and they have remained in demand for nearly a hundred years.