How many lawyers does it take to cut a square sheet of plywood? Boy, I wish I actually had a punch line for this. I'm kidding, my father is a lawyer.
Dude, honestly, you cannot blame the tools here, I don't care who makes them, Sears or Festool or some bazillion dollar hand plane. Making mistakes is part of wood working. Unlike so much else in life, you can't just pony up some $$$ and get everything you want. You have to develop skill, technique and methods. It hurts, it's not easy and you will make tons of mistakes. Some day, you can laugh at them.
Like this. One of my first Festool ventures was to use my shiny new MFT/3 and OF 1400 router to make some long dados on big panels. Oops, I didn't tighten the router to the guide and it veered not just off course ruining half a $90 piece of cherry ply, it went into my $150 Festool rail and ruined it too! If I would have been smart, I would have chopped off the bad part of that rail and had me a nice short size spare for all kinds of work, but instead I decided I simply had to take out my frustration (at myself) by bending that rail into a useless piece of junk.
A year later and I use my Festool stuff to make all kinds of things, some very precise and very square. I can do amazing things that amaze myself. However, I am still a little gun shy with the router in the rail.