This ignores probability a lot, but here is how you should think of random.
Random < 500, this is logically true 50% of the time yes? So logically it will be 100% when considered over 2 ticks. Basically meaning that the move has a 100% chance to happen, especially as those conditions aren't very strict. If it's not happening enough for your liking, it's because your AI is too loose already and you have other things listed above it that are taking precedence.
The best way to do AI is actually take your randoms lower than 100, and only use high values for specific situations like continuing combos. To explain that, going back to the probability and percentages
Random < 100. This is true 10% of the time, so you have a 100% chance over 10 ticks, or 6 chances to do the move every second. If you move down to random < 50, it's a 5% chance and true once every 20 ticks. This has the benefit of OTHER moves with the same potential being able to take effect. More of your AI is able to work. Rather than it picking the same couple of moves over and over because they are so loosely triggered and their random value is so non-random.
