Having said that, I wish we can select the objects (e.g., text box, arrows) we have created and move them around. Right now, we can only undo and if an arrow is drawn a few steps before and now you want to reorient its head, you are out of luck.
In the past (4-5 years ago), I used to use Jing (now called TechSmith Capture) and liked it a lot: https://www.techsmith.com/jing-tool.html and liked it. But I think the company decided to remove some features and/or require some sort of account creation; on top of that, it (if I remember correctly) kind of lost its earlier simplicity, so I stopped using it.