"Get a better haircut" is basic advice for people wanting more dates. For some it's a platitude that doesn't help. For others, a haircut is easier said than done. Why invest in yourself if nobody is interested in you? In my 20s, I switched from cutting my own hair to going to a stylist, and at first it felt scary & invasive. Now I look forward to my salon visit, and good hair makes me feel attractive and proud to be myself.
If you have been single for a long time, and you want to start dating, something needs to change. You can take direct and indirect steps to make yourself more available, desirable and confident. Start with small, low-risk changes so you don't get overwhelmed outside of your comfort zone.
An older reader's early social experiences discouraged him from dating, but he would like more friendly activities.