If you have the space, check out aerogardens or any of those aeroponic types. They are very easy to get plants going with very little effort, especially if you get an excess water reservoir. I’m pretty sure there are also instructions to build your own somewhere online.

I have 2 set up that I grow lettuce and herbs in for my rabbits, but you can grow lots of different plants in it.

I barely function, but a single Aloe Vera plant has been alright. The responsibility is basically to give it water every 7 days or so and that's it.

The trick is to research what plants you can manage. My first real garden project was creeping phlox, a very hardy and drought resistant plant. If you're gardening outside nature will handle some of the workload and if you talk to a botanist about what grows well in your planting location and climate you should be able to find something anyone can manage. Lots of smaller skills to build as you go, so next plant you can tackle something a bit trickiet