There is a clear reason I don't play Mordhau or League of Legends, or Starcraft 2.
My days of glory were in Diablo 1, Command & Conquer and Starcraft 1, on release.
Unless you make me 25 years younger, I don't see how I can "try it and get better" and start clicking faster to manual block.
Mount&Blade, while having strong MP community and high skill cap, in each and every game had auto-block feature, which allowed a slow old doofus to enjoy the singleplayer game for what it is - adventuring,RPG, strategy, economy, atmosphere and occasional combat. Not having this simple feature now makes this game pretty much unplayable for me.
Hey this might help, you can change blocking to be combined with movement direction keys, helped me as I have muscular myopathy.