Failed automations

Periodically my home automations stop working for me, and then magically they work again. Especially automations for entering and leaving home. Also those that have shortcuts and slightly more complex conditions. This has happened to me practically since the first day I have HomeKit. Then a few days pass, and they magically work again as if nothing had happened. The feeling I have is that the system does not recognize when I leave and enter the house. I have Apple TV, first and second generation HomePod and also obviously an iPhone. I don't know if it's a problem with Apple's servers, because what surprises me most is that after a few days everything is solved. If this happens to anyone else, I would appreciate any information. Thank you