What would you do differently?

I seem to find it hard to make friends and fit in at a new job. In my opinion, I turn up, act friendly, smile and ask questions to get to know them.. then rinse and repeat but the effort isn’t reciprocated, I feel like I have to make all the effort for little return. Like the girls will go to lunch but won’t invite me, or I’ll say I want to get involved with a project to find out that meetings take place without me. I start to feel excluded and then want to withdraw making it easy to be ignored. I feel like some people look at me strangely ‘why are you trying to talk to me’ lol I am a bit of a loner and tend to attract other loners but even those friendships don’t work out! It’s frustrating because I really want to connect and make friendships but it seems like a difficult task - then someone else will turn up - act friendly, smile, ask a few Qs and immediately be part of the gang 🤷‍♀️