Anxiety help!!! 😖

I need advice...i feel so lost and lonely!
I moved to the US few years ago from europe and i've never been more alone in my life. My social life =0. I don't even know how to make friends, because i feel like ppl would think i am weird. I had some really good friends in Europe... when i came here in the frist few months everything was fine, i would talk to lot of people or have random conversations, but now i have/developed social anxiety and I'm so nervous sometimes, that when someone trying to talk to me i got all shaky and i feel uncomfortable. I have no idea how to start making friends... 
I feel like I need someone who can relate or feels the same way :(
I'm so embarrassed about it, i have to write this anonymously. Pls i know it's a difficult situation, but anyone have any advice???
Im in my early 20s.

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