It’s like anything, you get used to it after some practice. Definitely not as daunting as you think.
You can either start with one of the milder razors sold by Edwin Jagger, Muhle or Merkur and pair with a moderate blade such as the Gillette Silver Blue OR get a good adjustable razor such as the Merkur Progress or Merkur Future and again pair with a moderate blade. Do not start with Feather blades.
Is there a reason why nobody has ported postmarketos to any of the pixel devices?