Tool to draw basic sprites

Hello, I’m trying to make a 2D space dogfighting game, and I was wondering what is the best tool/software to draw some really basic sprites. I’m no artist, so what I want to draw will mostly be combinations of basic shapes. Like my turrets might just be a square box with a rectangle sticking out of it, my ships my be some right triangles connected, etc. Does anyone have a recommendation or some useful tips? Thank you!

I make stuff like that using Adobe Graphic, which is a quite nice and well-designed drawing program for at least Mac and iOS (not sure if there’s a Windows version, but knowing Adobe, there probably is). Then I simply export to PNG. I used it this weekend to make these sprites for Mini Micro, for example.