Hi there! I’m new here also! I’m also fairly new to keto, but not new to therapeutic diets. I’ve been on the autoimmune protocol (basically eliminates everything and is super clean and restrictive) starting three years ago, and still maintained it with reintroductions. I just transitioned to a keto version of this starting about a month ago.
I think the key to sustainability is to keep things simple. You mentioned the lack of keto products. What kind of products are you looking for/using? I keep any processed products at a minimum (besides things like condiments and some sauces) and generally eat meat and veggies cooked in different ways. And meal prep saves my life during the work weeks! That way I’m not stuck every evening staring into the fridge, wondering what I’m going to have to eat. That’s a certain recipe for disaster.
The social aspect can be a bit tougher, and I don’t know if I can offer much insight on that one. Sometimes it takes people a while to see the benefits of something and then later they become more supportive. When I started AIP, my family thought I was a crazy nutcase lol. But I stuck to it and after they saw my health turn around, they became interested and supportive at that point.
For general society, there are pockets of people who think nutrition is important! A lot of my social interactions with this came online. I just searched out groups who were doing the same thing I was and reached out, just like you did here!! So hopefully the conversation that ensues is helpful. 
You said you’ve been aware of keto for a few years. How long have you been following it?