I am going to provide a little bit of wisdom that works for me, but goes against what you will hear some other members recommend. So, with that in mind, use this as you see fit.

Stretch your skin less in those areas that have generated the bumps. Stretching the skin gives you a closer shave. That area of your neck may be prone to ingrown hairs when the shave is too close.

I stopped stretching the skin with my hand (just funny shaving faces) and had a huge improvement in the comfort of the shave in my trouble spots on the neck.

Also, little to no pressure on the blade.