I could've been generating a ton of passive income

I've been investing for years, but this year I decided to focus on dividends. So far, my dividends have been about $450 a year. Now that I'm looking for ways to get more dividend returns, I realize I could've used my $79k savings to buy a house and put it in a high-dividend fund to get about $2-3k per year.

Why didn't anyone tell me about this?? My money has been sitting in my savings account this whole time! 😭

On a serious note, I'm not sure if I have the math right: SWVXX dividend yield is 5% and $1 per share. If I put $79K in there, will I really be getting about $2.7K per year?