You can save the plant. Try and find some complete Phalaenopsis notes written for where you are in the world. Culture varies according to climate even if you are growing your plant indoors.

There are a zillion past threads on Phalaenopsis on this site. Do a search and read some of those.

Still puzzled, ask some more questions.

Has there been any new leaves develop since the repot? The root system looks fairly small, so I wouldn't be surprised that it would drop leaves to adjust to the lack of water when repotted.

As long as there is new growth, just keep it in the current potting mix and water when dry. If no new growth, something needs to change (light, water, mix, etc...).

Good luck,

Bob

@arthurm2015 Thank you! Got an idea from a past thread to use rice water.

@westoh Z6 Unfortunately, there hasn't been new growth. I'm thinking to tackle each variable at a time see if it improves the situation. Thanks!