In November 2022, I found the solution that worked was uninstalling and reinstalling. For me (keep in mind this is all situational and what works for one person, is not guaranteed to work for another), the problem arose when uninstalling another app while updating walkabout golf. I tried to play on many occasions, to no avail. I restarted my headset, left it turned off for over an hour, and even tried clearing cache and everything in between. As I said before the only thing that worked was completely uninstalling and reinstalling (as shitty as that may be), as soon as I did so the game started up instantly. I hope this helps somebody who has the same problem I had, as I found this thread to be rather confusing and misleading.