I've had my car 9 years now and I'm only on my third set of bulbs.
I don't drive much but I drive with all my lights on all the time.
(I did the mod where all lights turn off with the ignition.)
I'm guessing that my yearly undercoating/oil spray has kept all my grounds conducting properly so that my ECU gets proper voltage readings and isn't turning the alternator up and down creating voltage spikes.
(Krown sprays all wires and connectors.)
The bulb that you twist then pull out is the high beam bulb.
The low beam has the adaptor and is held in by a wire spring thing.
The spring clip is a PITA to deal with and it's really hard to get in there to replace the bulb.
You'll get good at changing the bulb because you might have to do it every month. lol
I just replace my bulbs every December. Haha I drive my car all the Time so I have to replace them. I put on an average of 11k a year
I've also learned through trial and error that the cheapest H7 bulbs have the lowest draw and last wayyy longer. I think the higher draw might overload the wiring harness? But I'm not that savvy, it's just a guess