Hi Game Devs!

I am currently developing my Open World Video Game in the Godot Engine, and the only thing I need is a world. I got done most of the game, (character models still need work, but I can get that done once I figure out this world problem I have) I'm just not sure what to do in making the world. I know I could use Blender, and yeah that does sound like a valuable option and it could work, but I also found RenderDocs, which I saw a video on where you ~~used a chrome shortcut and RenderDocs captures that shortcut and grabs 3D~~, I actually have no idea how RenderDocs works, but I know I could use it too grab 3D locations using Google Maps. But I couldn't figure that out. I just can't edit the map afterwards if I choose this option.

I'm also not saying that I want too make a massive world, especially like Fortnite or Grand Theft Auto V, I just want a simple but small sized world, but not too small if you know what I mean. I'm aiming for a map like this. (I'm not making a lego game, I'd thought I mention this here.)

I then remembered Unity was another option, but I don't feel like using it because of the whole debacle that happened with the engine. I also don't know if It's easy to import it to Godot. The last resort I can think of is using Godot to make it, and I did also find a video where someone made a map in Godot, like a very simple world.

Options: Godot? Unity? RenderDocs? Blender?

I'm just not sure what is the best choice.