Anyplace you might find a wireless charger you might just as well find a USB-C plug. You’ll get more power, any phone from the last few years will support it and its cheaper too. Wireless charging in the vast majority of cases really is just an over-engineered solution made more for the “cool factor” rather than solving the problem in the most effective and/or efficient way possible.
Doesn’t take much more than a web search to find them. Plenty of ones out there. The basic conclusion of all of them is that its not very efficient. Apple’s only 80% efficient because they use magnets to precisely position the device and most makers don’t bother with that.