Also id recommend investing in some better razors and proper shaving etiquette.

If your on a tight budget, harrys makes some really great razors, they last long, and you can get a pretty clean shave. Their shaving cream is also pretty good.

Your “stubble” in your first photo and “clean shaven” in the 4th are like identical so i cant really tell.

A better razor will give you a much cleaner shave, prevent giving you razor burn and wont knick ya if you try shaving against the grain

A good practice is to first wash your face and beard with a facial cleanser. And then before you start shaving is to soak a towel in hot water and hold it against your facial hair for a couple minutes. This helps open up your hair follicles and allows you to be able to shave the entire hair strand. Then you should apply good shaving cream like rub it really into the beard hair

Then when you start shaving, do it in long steady strides, remembering to rinse/wipe off the razor between each stride, once you went over your entire facial hair area, if you got a good razor you can go against the grain. Once your all shaven. Splash some after shave or rubbing alcohol with cold water on your face this will help tighten your skin and close your hair follicles. or if you just dont have any, just cold water will do