What should non-wealthy investors be doing in their 30's to have a real, positive impact on their financial situation?

So I don't make that much money, and neither does my wife. Like for sure less than 100k each in a high-expense region. I always feel like investors on Reddit have hundreds of thousands of dollars to throw at this, and I just do not. However, I want to make the absolute most of the money we do have to save and invest, and I feel like I'm doing a pretty good job so far. I opened my Roth IRA in 2023 and I'm up 270% since then. My wife's is up 40% over the last year (made hers much more recently). M