New EV owner here. We charge at home so I don’t need to use them, but stores nearby have chargers. I tried them to see how they work. They are often broken.
One store has a Volta charger (free!). It worked great the first time; the next time I went it was broken.
Walmart has an Electrify America fast charger. The first time I went, 1 of 3 was not working. The next time I went, 1 of 3 was not working, but it was a different one.
Was I unlucky, or are these charging networks unreliable? Has it been getting better or worse over time?
Unfortunately basically every charging company has decided reliability isn’t important. The exception, Tesla, has the most reliable charging locations by a large margin.
The good news is most cars will be able to work with Tesla chargers in the next year or so. Not sure what car you have, but look up when they are adding support for your vehicle. Until that happens, your experience is quite common and will continue.