Hi there Patches04!
Thank you for posting in Apple Communities. It sounds like you are having trouble charging your iPhone XS with your wireless charger. No worries, we will give you some information that will help guide you towards a solution.
Wireless charging uses magnetic induction to charge your iPhone. Don't place anything between your iPhone and the charger. Magnetic mounts, magnetic cases, or other objects between your iPhone and the charger might reduce performance or damage magnetic strips or RFID chips like those found in some credit cards, security badges, passports, and key fobs. If your case holds any of these sensitive items, remove them before charging or make sure that they aren’t between the back of your iPhone and the charger.
Find out more about wireless charging or to see if your charger is certified for use with Apple products, look here: How to wirelessly charge your iPhone
For steps on what to do if your iPhone won't charge wirelessly. Look at the "Learn more" section.
We hope this helps.
Cheers!