oof, sounds like you've had a rough time with it.
Wires go on a layer beneath modules and connect power sources (either Generators or the Reactor) to modules that need power of the matching type (color). My guess if you had trouble with loadouts is the reactor wasn't at the right upgrade level to power everything (you can upgrade it with the debug menu too)
For more info, there's a (?) button in the bottom right corner of the internals menu that might help.
Trails getting stuck on is a known bug, getting knocked out of the arena is *generally* intended, but if you spawned outside of the arena it sounds like there could be some sort of physics issue I need to look into... was it in the floor of the boxing ring?
At any rate, I appreciate the feedback!