Agree with many of the other commenters on the multiple causes of loneliness.
I've been fortunate to find community at my Unitarian Universalist church. UUs don't have an expectation to believe any particular scripture, but instead share a common set of values, the first being every one has inherent worth and dignity. My congregation has people who identify as atheist, Christian, Buddhist, Jewish, Muslim, and several types of pagan. So the focus is on being in community and helping each other grow and achieve their goals. I've made good friends through the choir and a young adult group that organizes social activities. UU congregations vary based on their membership, and many stream services virtually so you can check them out before going in person. Here's a link to find a congregation near you.

Thanks for sharing. I had never even heard of sweet potato pie and just assumed pumpkin pie was a Thanksgiving tradition all over the US