The advantage of contests over the lottery is that it is often free to sign up. Try searching online and on social media for free contests and sweepstakes that you can enter. You can also learn about contests by paying attention to advertisements for them on products while you're out shopping. Many of them don't even require a purchase for entry.
If you’ve got some free time and don’t live in the middle of nowhere, becoming a Lyft driver can be a very lucrative side hustle that allows you make money fast. And right now, they’ve got a promotion going on where any new driver will instantly get a $300 bonus after completing their 100th ride. If you start now and hustle hard on the weekends, you can probably unlock that bonus within a few weeks of driving (and that’s in addition to your normal earnings).