And where do you even go? Civic centers, bowling alleys etc are dead. Moderate churches are disappearing. Car centric everything means if you have a disability or not much money you're screwed.

As with most things, the hardest part is the first step: you have to find a community to join. It can be anything, but senior centers are greater resources for older people that they unfortunately don't take enough advantage of. My parents found a seniors' program at a local college and started taking classes with people their age, which created an entirely new friend group for them. You just have to find a group of people doing something you enjoy and the relationships will likely form without much effort after that, provided you don't have crippling social anxiety or something else that makes social interaction difficult. Point is, once you get the ball rolling, momentum takes over; the hardest part is getting it (i.e. yourself) moving.

Left my country and the coldness (not just the weather) was such a huge part of it.

You need a group that’s small enough to allow for personal interaction, but large enough that there’s enough people that you’re more likely to find ones you click with. It’s easy enough to do online - a lot of people meet in games like MMOs and on social media sites. You already share a common interest, and if you click you can expand your friendship outside of that immediate context. Even within the context, you get friends and community.

Real world kinds of places can include things like a men’s choir or a community theater group if that’s your demographic. Those can lead to Saturday brunches and such. There’s also places like dog parks where you can hang out with other dog owners, and sports groups like bowling and ultimate that have various levels of serious vs fun. There’s also a lot of volunteering opportunities.

Some groups can be cliques that can make it harder to get into at first, and just like in dating you can’t let a negative experience turn you off from the whole scene.