I’d recommend that you have the issue properly diagnosed, otherwise, you “could” end up throwing money at parts that don’t need to be replaced.
The Federal Emissions Warranty covers the charger, and many other components, for up to 150,000 miles in some states. We could speculate that you are beyond 150K, since you stated that the car had 120K in 2019, or that you do not reside in a state that carries the 150K warranty. All we know is that you bought the car in 2019 with 120K on the odometer.
As mentioned, the low cost solution is to charge (up to 60%) via HV+ and to learn to live with the inconvenience of that solution.
In the event the charger has failed, a unit could be sourced from a salvage yard, eBay, etc for less than the cost of a new unit from the dealer. Replacing the unit carries some risk, including but not limited to, electrical shock and death. Paying a trained professional to replace the part may be an option to consider.
Really cool project, especially the focus on safety and proper voltage control. I happened to check
https://casinosanalyzer.com/free-slots-online/Fishing-God / earlier and noticed that, just like DIY electronics, understanding the underlying systems makes everything feel more rewarding.