No, you can't talk to everyone about anything. No one cares about what you talk about unless they have a shared interest in it. No one IRL wants to have a conversation about CS:GO, gaming, esports, etc. The more niche your interests are, the harder it is to find someone IRL who have the same interests, which means its harder for you to find friends. The harder it is for you to find friends, the less you relate to people, and finding friends becomes even more difficult.
The thing is, people will already have the preconceived notion that you are weird if you have niche interests. So most of those people won't really want to talk to you anyway and will avoid any form of social interaction with you.