The fact that you find some people "boring" suggests to me that you personally find interest in very specific things. Perhaps you have a particular interest or a range of interests that you enjoy discussing, but are struggling to feign interest outside of that "sphere".
That description probably fits myself to a degree - I enjoy music and films on multiple levels, both as a listener/watcher but also as a creator/writer. There's a bunch of other subjects I am enthusiastic about too. But what I have found is that, if I can tap into why someone else is enthusiastic about a subject they are into but I am not, I can sort of feed off their enthusiasm and "appreciate" the subject, even if I don't feel like exploring it any further myself.
To give you a personal example - I used to work with a guy who liked trains. I have no interest in trains. In fact, in the UK "train enthusiasts" (or "trainspotters", as some are termed both correctly and sometimes incorrectly) have been the subject of jokes for decades. To many, they are the original "nerds", long before the internet came along and made it cool to be a nerd! But after asking some genuine questions about where his particular interest came from, and why he found it interesting, I did kind of understand it, on a level. He liked a particular kind of engine that only carried passengers in rare circumstances when there was a shortage of other engines. He found the process of (a) finding out that this particular train was being put into use at short notice, then (b) getting to that part of the country in time, and (c) clocking up hours riding on this "rare" train, to be exciting. And, I can sort of get that. Trains might not be interesting to me, but exploring the country and the "thrill of the chase" sounds like fun. It reminds me of the thrill I get from seeing my favourite bands at different venues around the country.
So, what I am suggesting is that you don't have to like the same things as someone to find a way to talk about it. Explore their interests until you can appreciate them on a level you can relate to, and you might find that you can have a conversation you both understand and find interesting.