I'm not a fan of dirty talk during. It just sounds ridiculous to me.

Now, talk about what they like and what works before or after, or feedback during (higher, to the left, keep going)that's just courtesy.

I was never a fan before, I thought it was ridiculous too. But my partner loves giving and receiving dirty talk so I just got over the embarrassment and tried for it. I actually grew to like it when confronted with the fact that my partner was getting off more with it.

Usually, I just describe what I'm going to do before doing it, or ask if they like what I'm doing in the most vulgar terms I can think of.

I am a reeeally verbal person, it's hard for me to NOT talk dirty in bed. However, I'm in a kinky and queer relationship, so I don't know how much of what I say would be comfy/useful to you. When in doubt, it's hard to go wrong with "yes, fuck me, please!" and similar enthusiastic begging. Reading erotica can also be a fun way tot come up with ideas.