Need advice

This aint about tech but I’m switching. As this is my first switch, a large part of my professional life was spent with good colleagues who were also freshers like me and they were god-sent. Even my seniors were great and I never felt that superior-inferior things. Now that I’m switching, I’m just feeling all alone again. I stay with friends but I’m not feeling good about how it goes in the new organisation. Can someone please give pointers on how I should be in new office so I don’t end up alone?