I’m reading through all of the responses here, and I’d like to offer a different perspective.
Yes, to some extent, it can be difficult to maintain friendships. I’ve always had difficulty maintaining close relationships with females. But, it’s something I’ve taken on directly and gotten much better at. But, I definitely feel you.

However, what I noticed from your post is your comment regarding the pattern of friendships and the pattern of the “type” of people you’re attracting as friends. My guess is that some part of you is attracting this type of person, and until you uncover what part of you that is, you may continue to attract those types. I’d suggest you start to look at your friendships, and maybe write out what you see, what you feel, the dynamic (as you’ve already mentioned above) and start to notice patterns. I typically use one of two methodologies…I’ll apply the reflection theory, trying to observe if there’s something I’m projecting onto them that I’m not able to recognize within myself. (You don’t see things as they are, you see things as you are.) Or, I’ll apply the universal law of attraction – and try to identify the patterns so I can figure out what part of me is attracting these kinds of people.

Either method will likely take you down a road of insight. good luck!