I'm ignoring the accusation that these shots "look bad" which is pure opinion. I actually quite like the first ones, the second is just 'standard fayre' for this type of shot.
These are artistic decisions, made by the director or director of photography, and in no way are due to tape-fail, generational loss or poor film stock. They are conscious ...
The easiest example of this that can be done by anyone with the most basic photoshop skills is using multiple images of the same scene, and then cut biths out of those images that you want. Note: professional editors of course use many more advanced tools, but the principle remains the same.
A quick and dirty Paint example might help convey the basic idea. I ...
They use computers, and have various techniques depending on the situation:
See also: https://www.fxguide.com/fxpodcasts/the_art_of_wire_removal/
Wire Removal By Painting Frame By Frame
Rig Removal By Patching Over The Top
Stabilise and Paint Back
Roto Clone Tools/Source Nodes
2D Background Replacement
The technique of manipulating color is part of a process which is called "color grading".
I am not aware of a special name for this particular look. It's normal to see certain styles more often within a time period as film makers get inspired by other peoples' work. It's a trend, that probably subsides one day or shifts in another direction. ...