Life for a single person might need a bit more if finding good dates has become an issue, so keeping busy on a regular basis is a good idea. While there are always things to do with family and friends, breaking out of that routine could be a good idea. For those no sure of what might interest them, researching a new hobby could have some good results. They can read about it online, but getting more information could take them places they never knew existed.
The local hobby shop could be a good place to check out for ideas, so it might be a good place to start the hunt. If something is interesting there, then meeting new people who share the same interest could happen right away. Not everyone at the hobby shop will be single or interested in dating, but the connection with other people can be uplifting to a single down on their dating luck.
Many hobbies are practiced by groups, and connecting with the person running a particular hobby can be a good way to get more information. If a single person finds they are interested in making wine barrels, there is probably a group that gets together on a monthly basis to trade tips and teach newcomers. Reaching out is a good way to connect with enthusiastic people willing to welcome a new person into their circle.
Hobbies are seldom about helping singles meet one another, yet they can be a good way to find someone compatible or expand a circle of friends. Even if that aspect does not come about, at least the single person gets out of the house for a time. They will tend to feel happier with their life, and they might even meet the person of their dreams for a long term relationship.