This got really interesting.
Still not liking the looks of the mecha, but the fanservice is good though!

Somebody should kick the MC in the ass so hard it will make him grow some balls. It's frustrating how he can't take the slightest hardship without feeling so sorry for himself that he can't even walk.
I don't know, but isn't his behavior normal? His worth is determined by his ability to pilot, if he can't pilot, he's worth nothing.
He's already training alone, but if he's unable to sync with a partner, it's pointless.
It's not something that could realistically change by "growing balls".