Just keep yourself in good shape , look as nice as you can and look approachable. Smile at people and get out to church and social activities as much as you can. I think many older men may feel that they will be expected to behave with a woman in ways that they are a bit shy about. Just be complimentary and reassuring. And be up front about what you are looking for in a friendship. And pray and ask God for a friend. He will provide.