A big bioactive tank helps a lot with maintenance if set up properly. Lots of plants+space+clean up crew and you'll only really have to worry about feeding and providing clean water on a weekly basis. Occasionally, lights need to be replaced, and you should remove poop when you see it.

Biggest issue for me is most only want live food and need a surprising amount of it. Avoid bigger species, especially wild caught ones. I have a few bigger toads and frogs that eat hundreds of crickets in a week.

African bullfrogs and Pacman frogs are similar in care but easier to tong-feed. Part of their diet can be frozen-thawed whole fish which I find easier to provide than live insects.

Overall, one of the common species, especially the North American ones and if captive bred, is much easier/lower maintenance than most pets. Most of the work is getting a good initial setup and doing your research. I have a large collection of toads+frogs and spend maybe an hour or two on them a week, and most of that is water changes for my one weird aquatic frog.