ABM Happy Birthday to You.
Have lived abroad in the past for a few years, and can take a long time to settle in, especially if there are language barriers. Must admit that I was childfree in those days, so could take up any invitations to social events that I was given, and was also lucky enough to make friends with a girl who introduced me to her large social circle and involved me in their various escapades.
It must be more difficult to get out and about and meet people with a baby in tow, but if you do speak the local language, all I can advise is to accost anyone you meet who looks about your age and has a baby in tow. They might be a bit lonely too, as it can be isolating being a new(ish) mum. If you don't speak the local language, perhaps you could meet a young mum who studied English at school and would like to do a language swap whilst the babies crawl around your feet.
Finally, the best bit of advice I ever got was to try and get out of the house every day - even if it is just to have a coffee on your own, pick up some shopping, take baby to the park, whatever. It breaks up the day, gives you a reason to get dressed and occasionally (!) wash your hair, and sometimes can lead to new friendships.
Also, the motherhood thing gets loads better in their second year - they start communicating with you, and even if all you talk about is diggers, the moon, shops (whatever turns your child on), it can be very rewarding.
All the best for a great year ahead.