I have a doozy for you.
This was a late 80s/early 90s animated movie. I think it might have been a Japanese anime. I remember it featuring two alien factions at war that eventually uploaded their conscience into giant robots. It was surely to sell toys. I remember the leader of the "good" faction was a white robot that had kind of a crane like neck. Another I recall is a snake like robot with two giant wheels on either side. It took place on their world (which I think was dying) and some humans came across the planet. All the robots had cockpits and could transform into vehicle type things when the humans interacted with them. I can try to provide more details if asked.
I promise this was not a fever dream, I watched this as a kid.