For basic automations like you're mentioning, Home Assistant is pretty much rock solid. Bad devices are far more likely to give you trouble than HA itself. Don'

For basic automations like you're mentioning, Home Assistant is pretty much rock solid. Bad devices are far more likely to give you trouble than HA itself. Don't buy anything cloud-based if you can avoid it (though many of them do work well with HA). A zigbee dongle with HA and Zigbee2Mqtt integration should cover most of your use cases.