I am single and it is unlikely that this will ever change now as I am in my early 50s.
I tried everything in the last decade I could think of: online dating, going out more often, trying out new hobbies, travelling and I have also had different jobs which could have given me new opportunities to meet people, but I just never met anyone/
Online dating especially made me extremely unhappy and self-conscious. I struggled with having to deal with so many time wasters, sex pests, casual sex seekers and after a while I started to even feel unsafe and I got fed up with feeling that all that matter was the way I look and that most of the men I was meeting were only interested in how quickly they could get me to have sex with them.
I gave a man that I had known as a friend (or so I thought) for about 5 years a chance only for him to turn abusive almost as soon as we started dating. I then found out he had been abusive towards other girlfriends. That was the last straw for me.
I think at this stage I have to accept that this is it. I am not making any proactive attempts to meet anyone anymore and I will never touch online dating again. Also a lot of my trust has been destroyed because of how my ''friend'' behaved.
Instead I am focusing on things like friends, work, activities/sports, travelling and generally building a good life for myself while I am still reasonably healthy and active. I am actually much happier this way.
At least I know I gave dating a good go for a few years and I tried to meet someone but there is no justification for me to keep doing something that is simply not working for me and that is making me miserable.
I truly believe you can be single and happy.