Guy's Behavior

What can I do about my younger non-confrontational boyfriend if he rarely defends me?

My boyfriend who is extremely shy and non-confrontational has always kinda failed to stick up for me when someone makes a rude joke/regard. I am able to defend myself but sometimes I do like to feel like my partner has my back and will stand up for me. I can see he has tried but sometimes he either stays silent, says he didn’t notice what was said, or just says something that has little to no effect. Online when people are disrespectful through chat I feel like he doesn’t do his best to back me up, but I guess that is less significant bc its people who we don’t know nor will ever encounter. When something happens amongst friends, sometimes he fails to notice when something happens. Yesterday over voice chat with a couple of friends, a male friend made a disrespectful sex joke about me in front of him. He didn’t understand the joke at first but when he did, all I heard was him say the guy’s name in a serious tone. I didn’t think that was much, but after he said he did say something but the mic must’ve cut him off. I feel like he has been trying to stick up for me more but in his nature there is something that kind of makes it hard for him. I feel like he barely notices/puts in effort but he does get upset internally when someone is disrespectful. What could I do in this case?

What can I do about my younger non-confrontational boyfriend if he rarely defends me?
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