I have the same issue; some days are worse than others (with multiple crashes; sometimes none or just one)... Same iPadOS 18.3.1 as above; I play with Apple Pencil Pro. Someone on another thread suggested disabling "Type to Siri", which I'm going to try out tonight; see if it makes a difference.
I've noticed that the game doesn't seem to like iCloud+ and is only saving to local folder. With my previous iPad (Air2) it would sync to cloud (through Game Centre) and if the game crashed I could at least pick up where I left off and not lose an entire day's progress.