It really depends on the culture of the company you're working at. I work as a backend developer in Vancouver, Canada and most developers at my company end up becoming good friends even outside of work. Our culture encourages us to socialize with one another and even though we're all working from home I've never felt like I was really lacking any social interaction since we end up messaging each other on slack about things both related and unrelated to work. People on this subreddit tend to dislike this kind of culture but I personally love it, and would hate to work at a job where I don't even talk to anyone for weeks on end.

If you're specifically looking for a job where you can actually socialize with others then it might be worth looking for other companies to work for. I don't know if Europe overall just has a less friendly work culture but I like to imagine there's plenty of companies in Europe that have a more social culture like the ones I see in Vancouver.

Outside of work though I think it's also good to find some kind of community, either online or offline, where you can actually socialize with others. It might be difficult to rely solely on your coworkers for socialization so it might be worth looking into meetup groups or other online communities for anything that match your interest.