I don't have any advice for you, other than to say you're not alone. Like you, I transitioned nearly 10 years ago, got the surgeries I needed out of the way. I've been a runner the whole length of my journey, and I don't really "fem up" much at all. Also, like you, I did all the things. I volunteered, I went to trans events and pride etc, I took up roller derby, and made lots of friends. And then covid came along, and then facebook banned my account, and suddenly, I was without the social connections I was used to having, and most of those friendships faded away.
These days, other than online spaces, my only regular queer and trans connections are my partner and the odd catchup with people that I used to see regularly, before covid changed everything.
But, it's ok. I still volunteer (though less than I used to). I'm the event director for my local parkrun, which is a pretty amazing community. I've been parkrunning for nearly 10 years, and even though I'm not close friends with any of the folk I've met there, it still makes me happy to see the same faces every Saturday, and to share our habit and our passion for getting out of a Saturday morning!
My life is less social than it used to be (and I'm an extrovert), and I've got less queer folk in my life on the regular than I would like, but I'm happy and I'm doing ok.
I won't pretend to have any answers for you, or tell you how to magically solve loneliness, but hopefully, there's something in knowing that you're not alone
I was in a similar position to you. Painful dilation, lost depth and single. And then covid hit. And I just stopped dilating.
It's years later now, and sometimes, I feel a bit of regret. Yet when I think about going for another round of surgery to get my depth back, the idea of having to start dilating again feels really forbidding.
Ultimately, I haven't been able to have the sex life that I was hoping for. But that was true before I had bottom surgery as well. And when I look at it that way, despite that issue, the other results of bottom surgery are still there. I feel better in my skin. My dysphoria is gone. Even if the outcome wasn't perfect, and wasn't quite what I hoped for, it's still better than where I started.
All of which to say is, even if you do stop dilating, at least in my experience, it's not all doom and gloom.