Bayonet style bulbs have to be pushed in quite firmly against a spring in the bottom of the lamp socket, then turned counterclockwise about a half turn and they should lift out with very little effort.
Turning the bulb will NOT work. Push in quite firmly to depress the spring in the bottom of the socket, then twist, then it should basically fall out into your hand.
Different bayonet bulbs often have different pin locations on the sides of the metal portion of the bulb (depth of the pin is varied from type to type to avoid the wrong bulb being inserted).
Bulbs may need to be replaced in pairs to avoid fooling the bulb failure display on the dash. The sensitivity of the display varies quite a bit so some cars can get away with replacing just the burned out bulb. For the cost of the bulb it makes sense to change both bulbs at the same time. in fact, I often just change them all when one goes as the labour to get the bulbs in an dout is almost as time consuming for one bulb as for all of them and the bulbs cost peanuts.
I repeat, the bulbs come out easily you have to push them in the unlock the bayonet pins from grooves in the socket. One you get one bulb out check the bulb pins and the socket grooves and you'll see how it works.