There is a lot of problems here you can fix OP. They are mostly too dark and underexposed.
Shutter speed is too low >>3749575
you've got blur. and >>3749577
The focus is off too, you need to focus correctly on the subject. Increase exposure, in your case that means using a higher ISO, and you need to correct white balance. Dont use daylight preset white balance for these. It:s fine to use cold or warm/non-neutral white balance, but you need to start from a good base, these have an ugly colour cast.
1. Fix your focus.
2. Expose correctly - use more ISO, or in a lot of these cases you could use a cheap flash to bounce off one of those ceilings or walls
3. Make sure your shutter speed is fast enough to not blur out the subject
4. Decent white balance
Then get into the creative side and work on perspective and composition.>>3749572
This might be too low of an angle, this might work better with a low angle, not as low, from further back with a longer focal length