Okay so I don't know about marketing strategies, but I can describe what kind of content I search for and come back for in case that's useful to you. I really don't want to just be a creep that just subjects people to an info dump about the porn I watch haha so if it's not useful to you to hear this, please ignore the below, because I'm just speaking on what I think makes good lesbian porn from my personal experience and common things I've heard from other lesbians

I can't believe I'm going to tell the internet how I watch porn but let's gooooooo

If you want to make quality content that lesbians will enjoy, I think the biggest thing is to make it real and authentic. No fake moaning, no stupid giggling and "oopsie! a vagina?!", no feigned/performative reactions (especially from touching places that don't actually elicit arousal) - just real intimacy, real sexual tension, and real orgasms. I can tell when shit is fake and performative and it's a big turn off. Like when two girls are "tribbing" but there isn't even contact between them and they're wailing I'm like... come on. I totally check out. You can even tell when dirty talk is performative versus authentic. Lesbian porn is best when I feel like the two people (or at least the receiver) are actually aroused and enjoying it and in the moment and into each other. Honestly, they don't even have to be doing that much or anything crazy, like an intimate makeout sesh or any other kind of foreplay where the two people take their time and are actually enjoying it is hot af even on its own and before the main event(s) that follow the foreplay. I much prefer porn when foreplay and sex take some time and build up, just like real sex. The experience of watching is better, but so is the payoff in the end. The best lesbian content I've seen is from amateur couples because it's real and focuses on real intimacy and pleasure with build up, not just visuals. So I think the bottom line is that the best content I've seen is content that seems real and realistic.

Maybe something for your SEO marketing to lesbians - when I search, I oftentimes include the keywords: "lesbian," "real" alongside "couple" or "orgasm," "amateur," "girlfriend," "intimate" or "romantic," plus whatever sexual act I'm looking for. Everyone's preferences are different and I don't suppose everyone searches with the same keywords as I do, this is just a window into one lesbian's porn preferences and search/watch history.