Are there organizations or groups that you might be interested in joining in order to meet new friends? My mother was forced to retire at 65 and spent the rest of her life (until she passed at 91) volunteering. (She was widowed when she was only 47 and never remarried.)
She used to say, "I don't know how I ever had time to work!" LOL! I'm planning on retiring this month after spending 43 years loving my career and have every intention of staying very involved in various volunteer organizations. It's a great way to meet folks with common interests. Staying at home as you mentioned isn't a way to meet new friends. 🙂