Is it normal to feel lonely in mid 20s when it’s your first day at new job?

I started with new job today, the people in my team are either married or guys who are older, no one literally no one seems to be of my age, everyone seemed so senior and mingled within themselves, whole I was there I felt so overwhelmed and lonely that I felt like crying and felt I cannot continue here! I got back home and burst into tears.. is it normal for me to feel that way? I got the job after 1.5 years btw. I miss my home while I am at work.