If you're at a company where you can't find a place to sit in the cafeteria because you're being rejected by cliques, holy shit. Get out of there this instant. To be honest, I'm so surprised by this statement that I can't help but feel skeptical about it, but if it's true, then you must've found one of the worst places to work in the entire world.

In my darker moments, I feel like a social cancer sometimes, and am no doubt really abrasive and unfun to hang around with some days. But even so, in the 2 decades I've been in the tech workforce, I have never felt like my coworkers were cliques of snotty teenagers looking down on me to such a degree that they wouldn't let me sit with them in the cafeteria. If this is your environment, it's not you, it's them, and you need to get out of that company ASAP. Basic adult respect should be a precondition for working at any professional workplace.