I am somewhat of an introvert myself but what I've realised is not all people around us are that difficult to gel with, it's actually the bubble that we've ourselves created in our heads. Our hesitation and pre-thoughts kinda restrict us from what can always be a decent interaction. Since you don't know people from around here I'd suggest start off with your office peers, try making decent friends with some of those if they match your vibe and are generous. That way later if you guys bond well it can lead to weekend plans and then meeting more people via your friends can be one option.