Sorry to hear of your struggles. Here’s some ways I get affection/body contact as a single person:

Animals: I pet them, kiss their heads, and sometimes they lick or snuggle with me.
Friends: We greet each other with hugs and sometimes ask for hugs on a rough day.
Kids: Some of my neighbor’s kids like to visit with me. They like to sit with me and read books, occasionally give hugs, and sometimes hold my hand if we are walking outside.
Other: Some people like the physical contact of a massage, manicure/pedicure, bodywork in psychology, craniosacral treatment, or osteopathic treatment.