I want to create something like this:-
Please provide your recommendations.
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This job seems easy to reach with Inkscape.
I took the liberty to upload some animated images, just to demonstrate that this program is versatile enough to create both the icons as well as the two charts.
For the second diagram, I used the Polar Grid extension to generate the nine spokes at equal intervals, but it is obvious that, depending on the experience of each user, the same result can be reached in different ways.
Of course, Inkscape can handle the text as well, as shown in the picture below. It's enough to attach the text of any curve / line type to get spectacular effects.
Of course, there are a number of graphical software as great as Inkscape, but I'll let the others to describe them in their posts.
But, believe me, they're all simple and easy to use (if you decipher their interface, toolbars, key combinations and working philosophy).
Every individual acquires these skills in no more than two hours of study.
The difference between one user and another makes it the experience gained from intense work. Every time I do something graphic with Inkscape, I get the desired result using a different or a new method, and that's exactly what I expect to offer me any kind of software...
I use the open source Inkscape for vector graphics. It uses SVG as its native format, but exports to many formats, and can render PNG (bitmap) images from your vector drawings. (JPEG is not suited for these graphics, only for photos.)
This is a link to its own toturial on shapes, which includes working with circles and arcs: https://inkscape.org/en/doc/tutorials/shapes/tutorial-shapes.html
Cross-platform (since you did not state an o/s), and open source, nothing beats the Gimp.
See the extensive list of features here. It can certainly create the images which you show in your question.
[Update] as @Nicolas pointed out, you might prefer SVG (it helps us to help you if you tell us this sort of thing in your questions). In which case, the generally agreed best solution is InkScape, which is cross-platform and free.