Are there any side hustles that are worth it these days?

I'd like to get a second job but it's hard to find something that fits around my main job's schedule and commute. So I've been trying to come up with other ways to make extra income.

I know that services like DoorDash/Uber/Lyft are popular side hustles since you can create your own schedule. Doing this I'd have to factor in cost of gas and extra wear and tear on my car/traffic stress. It doesn't feel worth it? If anyone here does these and can correct me, let me know?

I've also thought about buying and selling and items online. This has the same problem. Once you factor in platform fees and buying shipping materials, there doesn't seem to be much profit?

It's hard to find something that can make good money on the side. Do you do anything on the side? If so, what?