It's almost irrelevant. It entirely has to do with her level of attraction to you.

Good sex is about mutual levels of attraction and not experience.

With enough practice & intimacy you might be able to have good sex with a partner, but until you get that, it's absolutely about experience. I've been with experienced women and it's not even in the same world. Same goes for women, when they talk about all the bad sex they had from guys who sucked at it, it isn't because those guys weren't attracted to them, it's because they were inexperienced (and honestly selfish).

So the selfish part can be fixed by attraction, you're right. If you are crazy about someone you won't just do anything to please them, but pleasing them will be the most exciting thing for you, you would go down on them for hours if you had to, I've been there, some people take a while.

But inexperience is a big deal -- not even inexperience actually but lack of confidence and hangups about sex. From my experience it isn't that some people are bad at sex because they are inexperienced (some of the best sex you can have is just very intimate missionary holding each other tight). The biggest vibe killer during sex that I've seen are women who just aren't as present during sex, who keep worrying about some physical insecurities of theirs or just unable to fully let go and immerse themselves in lovemaking. This affects men just as much, although I always thought that women were far more insecure about their bodies than men (whereas men are more often insecure about their performance).

I've been able to break this insecurity/not being present by showering them with components and being super into it and present myself but it doesn't always work and it's much easier to just meet someone who is already in that mindset. There are absolutely people who will have lackluster sex with you and you can't fix that, at least not in a few years.

I'm not even talking about oral here either like the other guys. That's a whole another subject but I'm not too concerned with what bc as good as it feels it just doesn't have that intimacy for me when I'm receiving it, so I don't prioritize it. But giving good oral to a woman is very important because every woman I've been with cannot finish from penetration and most guys vastly underestimate this bc they have been habitually lied to by women (I would be surprised if 10% of women can reliably finish from penetration).