@baldandbrave91 You might want to try Aveeno Therapeutic Shave gel.
https://www.aveeno.com/products/therapeutic-shave-gel-with-oat-for-dry-skinThis is the shaving gel that I use and I don't experience nicks or razor burn anymore. I've been using it for years. Aveeno makes great products for sensitive skin.
Also, use a good razor. I was a huge fan of Mach3 but then I switched to a Fusion 5-blade and it's much easier on the skin.
My technique for shaving and reducing nicks and razor burn:
1. Wash the head in the shower. I just use bar soap. Dove Sensitive.
2. I used to apply King of Shave Oil -- about 7 or 8 drops and work it onto my head. This part I actually skip now because the Aveeno is good enough. But I have used it with Aveeno. But it definitely helps to prevent razor burn and rash. Especially if you are using less than 5 blades.
3. Apply Aveeno shave gel.
4. Shave against the grain. I only do 2 or 3 strokes over the same spot and that's it. As head shavers, we want it perfectly smooth, but we can sometimes feel that pesky hair stubble that won't go way no matter how many swipes we take. Just leave it! the more and more you go over the same spot, the chances of irritation and redness increases. No one is going to notice a missed stubble but they will notice your rash. So leave it. 99% is good enough!
5. Once done shaving, wash your head again with soap. Gently towel dry or air dry.
6. Apply witch hazel - an astringent - to your shaved head.
7. If you want more of a shine, then apply aloe vera. Or for a matte look, use any moisturizer. Aveeno makes some nice ones include those with 15 SPF.
I've found simpler is better along with good hygiene and care as you are making your way through the shave. Basic sensitive labeled soap like Dove, Aveeno Therapeutic, a fusion razor, astringent, aloe vera. All things you can buy in the supermarket. The razors you may want to shop around for - CVS has a pack you can buy or Costco.
For foil shaves, I use a foil shaver when I let my hair grow out and give myself a skin fade. Hygiene is still important. I always shower after I cut my hair. And I also take a cotton ball and dampen it with an astringent to clean the foil. And I use a disinfectant spray that barbers use on their clippers. It's important to keep your tools clean after use to prevent bacteria.
Good luck.