Sorry, I can't pass everyday, it's not my daily orchid coffee shop here.
For the fungus you did well. The necrotic zones are just spreading spores, the best is to remove them.
Orchids are tough, so a leaf off is not much a big deal, the leaf would have been dead at one not so far away point anyway…
A systemic fungicide would do good.
The second pic, I'm still in the mist… Multiple possibilites.
I'm just checking the 49°F (9,4°C)… It's very low for most Phalaenopsis. You should have a look into the cold ones like wilsonii, honghenensis etc. The hot ones (including most hybrids) should always be kept at 18°C or better. The second may just be cold issues.
For depression: I've clean up a bit my phals today and found quite some dead amongst the babies… it happens… Treated one plant for spidermites, found mealybugs happily installed on another… Cultivating orchids is also accepting some will die, sometimes for unknown reasons, usually because we make mistakes. I'm still paying the long time this summer without watering, never count on family for this…
Take it as a lesson, learn, observe, take measures to avoid it happening again.
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