Loneliness advice

Hi mamas. I'm currently a stay-at-home mum to a 18-month-old boy. I'm really struggling now with loneliness. For some context, shortly before having my LO I moved with my husband to a new city for his work. I have made a couple of mum friends here over the last 18 months, but I can't say I'm very close with anyone here. I see these friends maybe 1-2 times per month? I'm in the UK and it's very common here for mums to return to work quickly after having a baby, and I don't know any other stay-at-home mums. I did meet one who I made an effort with but we were just very different people. I always take my little one to activities every day like the park or play groups, play cafes etc. But I've never been able to strike up friendships here. My family doesn't visit, aside from my mum who visits about once every 6-8 weeks for one night. I do try to visit family, but it's difficult because my son is very unsettled and clingy to me when we're staying away from home. My husbands family live in a different country to this isn't an option either. I've found myself spending a lot of time on my phone and I absolutely hate this. If I'm at home with my son and he's playing I'm looking at my phone. At first I thought maybe I've become addicted to my phone, but I actually think it's just because I'm so lonely so I'm looking for connection or distraction. I don't know what to do. But I really want to be present for my son. It's just so hard when I'm alone with him all the time and there is no one to share this experience with. Does anyone have any advice? I feel like I wish my days away waiting for my husband to come home. I also feel so bad for my son that he doesn't have any family members (apart from mum and dad) that want to see him frequently.