How do I end on negative friends & make new ones?

I have 2 friends only. I'll link the recent possible example of how their behavior is, on regular.

A girl, who is super qualified physicist & sees the world as if she's the only one eligible around. She disrespects all the facts that she doesn't know.
Example: We went to buy a new iPhone for me, & the store guy was showing us the unboxed iPhone 7 that I got. That's when she tried pressing the home button, and she thought that the taptic feedback is a 'defected iphone'. She was like, don't buy from here, they are trying to sell you bent phones, you should never apple anyway. I was like bit*h, just because your physics department's desk's make that wiggly noise, doesn't mean you have to be stupid yet confident about technology.

A guy, I know him since school days. At first he was cool, but now he has gotten so freaking judgmental. Every single thing I like, he criticizes. He literally starts listing down disadvantages of anything I come up with. Even if its a simple little thing, like a cool meme I send him.
Example: Hardwell, the famous DJ came to India today & held a concert. Now I'm really pumped up about this so I watch the entire live stream. I send him the link, he replied "meh. He just comes to india just so as he get votes from Indian population"
I mean, wtf. Dude came from Netherlands to show Indians some good time, and also donated the ticket money for children's education. Besides, I love his music. So for the sake of this, can't he just reply "ok. Cool"

Look past all the technology, these billionaires you see were loners they didn't become multi millionaires by having a vast amount of egotistical friends, iPhones are behind of course but they're Secure to 99.8 percent of the world, aside from the ultra high tech vulnerable & Motorola who have a rate of around 59.6, they kind of like to hold windows hand in the vulnerability aspect of things… As fast as these phones are coming out it making me second guessing the security protocol enforced in these devices

How do you end old friends and make new once's, be eccentric… Always say your busy and talk to new people in the mall, school, store even if you don't really need help… Something doesn't come from nothing