For now, I would get it OOW replaced with Apple. It will be expensive but I don't think there are many third party repair shops that are routinely doing micro-soldering on the iPhone X. You may have more luck with some of the big Chinese shops like Rewa or G-Lon so you could always research them.
The iPhone X has a sandwiched pcb design which makes it very challenging to repair. Check out the teardown if your curious.
You can follow the troubleshooting tree here for some other ideas.
EDIT 2018/07/05
Just to note that there are now new tools which greatly improve the success rate of micro-soldering repairs on the iPhone X. My comments were temporal in nature considering the newness of the device at the time.