Photographing the moon, about 250,000 miles from the surface of the earth, means the moon is for all DSLR photography purposes at infinity.
I agree the photos are under exposed by what looks like 2 stops.
Focus is pretty good, considering we are at the bottom of a 50 mile deep ocean of moving air.
ISO 100 is good - as long as it's native to your camera.
F/11. No.
And here is why:
Diffraction Limited Photography: Pixel Size, Aperture and Airy Disks
Understanding Depth of Field in Photography
F/8 is better, but it's only 1 stop more open than f/11. But. Being able to then use one faster stop of shutter speed won't hurt.
So I would use f/5.6 or even wider to get as fast a shutter speed as I can get to minimize camera shake from mirror and shutter movement.
HDR is useless if the way your subject is lit gives it less dynamic range than your camera can capture. HDR is used to expand the limits of your cameras dynamic range. If you're not beyond the DR limit doing HDR is a waste of time.
The moon was a bit past full which can be seen by the nice shadows across the top of the moon that give relief to the craters and terrain there along the
limb/
terminator.
Here is an edit I did of your #2 photo using Adobe Camera Raw (Photoshop Camera Raw & LR Develop module)
I sharpened (Sharpening panel) using - Amount - 25, Radius -1.0, Detail - 25, Threshold - 0.
In the Basic panel I added 2 stops of exposure, -20 Contrast, +45 Clarity, - 20 - Vibrance.
I also cropped it a bit to a closer to square aspect ratio:
Here are some images I made back in September of the moon's total eclipse using a 400 mm focal length f/5 refracting telescope and a DSLR.
Each moon image in the composites is full scale (no cropping) in an APS-C size image frame.
Some Lunar Eclipse Composites