It's normal for each game to behave slightly differently bc of how the algorithm works, but it is the same algorithm for everyone. If you can afford the golden nuggets to go on adventures, you will get horse drops from that occasionally too. I appreciate it can be so frustrating when they don't drop. We have plenty of time left in the event but like all events, collecting from the stable (or the equivalent for this format) has to be done as often as you can, and at best every 3 hours when it's ready for collection. It's only going to be an issue if you're not keeping up with the other drops as with Ivy's one to upgrade. So, unfortunately, this isn't something I can escalate.