He said “wow am I not good enough “

I would just try to explain that. You just want to try something new. You want more. It's his ego that is making him say this to you. But he'll have to get over it. Sometimes it is boring. Especially if someone is going through same thing over and over. How's foreplay btw yall? Do yall try different positions? Are you able to orgasm most of the time?

Just tell him it’s like the same reason you put toppings on pizza or ice cream, both are delicious on their own but adding things just makes it even better and a different experience each time

Ok well you need to be direct and tell him what you like. If he isn't doing oral the way you like then you need to direct him. He won't know if you aren't vocal about it.