I have a world I would like to use for a fiction I am using, and the free tools I got from google (first page) mostly don't do it well. The world is a Disc. The landmass is about 475 million square kilometers. With 60% ocean, and 40% land. Of the land, 40% is either desert or the arctic, 20% mountainous, flatlands are about 25% and the rest is plateaus, valleys, rivers, etc. Now, the tool does not have to be that specific, but it would be fine if I could at least model a Discworld with the ratio of ocean, land, mountains right. It's fine if it is paid but free is preferred.
How about this one?
The top one looks best for your use - I estimate about 60% water and of the land 40% desert and arctic looks right. At this level of resolution you can't make out the rivers and valleys but I bet you can figure out where they are using other sources.
The bottom one has too much water and of the land too much is arctic. But it can be the B-side of your disc that everyone buys for the popular song.
I am sorry but of worlds with your mix of water and land types this map tool only has made one map.