Insecurities & Sex

I don't know how to address all of this but here we go XD

So my guys favorite position is cowgirl (and my legs get hella workout) but that's the only position he's really into I guess (we've tried doggy and spooning once) and idk how to suggest that we should change it up a bit sometimes.

Like I can be a top if that's what he wants but I want to be dominated some times as well 😅

Also, he doesn't seem to be very into giving oral (which im okay with for the most part, sex in any way isn't a deal breaker for a true relationship) however whenever he's fingering me he sits back and watches me and I get so insecure.. I always hide my face and think too much and don't enjoy it as much as I'd like. Why do I feel the need to hide my face from him during sex?? Why do I get so insecure??

And I'm so bad at communicating sexually because I dont deal well with feeling vulnerable :/

Idk what to do. Mature, maybe? XD