Dr Jessica Taylor just turned 30. I suspect you're a lot less alone than you think - it's just that women who recognise the ways in which we're harmed because if our sex are being bullied and shamed and harassed to such a point, they're silent unless they are sure the people they're talking to are on side. And so assume it's rarer than it is.
It's also worth pointing out that when I was a teenager, 20 years ago, it was seen as sad and embarrassing to be an open feminist. There weren't that many of us, then, either.
Liberal feminism is just rebranding of the women who always held the same sorts of opinions, and always said that they weren't feminists, but... and then agreed that you need equal pay, and abortion rights, but had absolutely no idea of how hard it had been to secure any rights, or what stood in the way of progress on them, or even that activism was still necessary. The assumption was that equality had been achieved already. Despite a plethora of data to the contrary. And again, same sort of choice rhetoric. I don't see that anything has changed except the willingness to adopt the term itself. The trick will be to find those women who do recognise the way we're losing ground, and really are feminists - prepared to centre women in their activism - and work with them.
It's always been a small number of activists willing and ready to change things. It always will be. Fortunately, that's all you need.
I don't know if it's worth emailing Jessica Taylor and asking if she can recommend groups for young women such as yourself. It must be very isolating. I thought I was the only GC woman I knew - turns out almost all my friends are, all assuming nobody else was! But I can't be fired, in my role, so coming out on Facebook was low risk for me. I know that not everyone has that luxury.