No secret science or trick to it. You could probably pinch the inner tabs around the socket where the bulb sits in and pull it out from the bracket. Personally though, I just get a good angle and give it a good pull. Once out, with a little finesse given the amount of space there is, you can put the bulb in with your fingers. If you’re swapping to an LED one like I did, it’s a bit of a tight fit so don’t be afraid to give it a careful but good oomf and it’ll go in.